> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-generated-reference-full-stack-preview.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# GET /v2/state/active-contracts-page

> Deprecated Use POST version of this endpoint

<div class="x2mdx-ref-page x2mdx-ref-page--operation x2mdx-ref-page--manual-api" />

<div class="x2mdx-ref-hero">
  <p class="x2mdx-ref-summary">Deprecated Use POST version of this endpoint</p>

  <div class="x2mdx-ref-badges">
    <span class="x2mdx-ref-badge x2mdx-ref-badge--protocol">OpenAPI</span>

    <a class="x2mdx-ref-badge x2mdx-ref-badge--added" href="#history-added-3-5">Added 3.5</a>

    <a class="x2mdx-ref-badge x2mdx-ref-badge--removed" href="#history-deprecated-3-5">Deprecated 3.5</a>
  </div>
</div>

<RequestExample>
  ```bash cURL theme={"theme":{"light":"github-light","dark":"github-dark"}}
  curl --request GET \
    --url 'http://localhost:7575/v2/state/active-contracts-page' \
    --header 'Authorization: Bearer $TOKEN' \
    --header 'Content-Type: application/json' \
    --data '{
    "activeAtOffset": 123,
    "eventFormat": {
      "filtersByParty": {},
      "filtersForAnyParty": {
        "cumulative": [
          {
            "identifierFilter": {
              "Empty": "<object>"
            }
          }
        ]
      },
      "verbose": false
    },
    "maxPageSize": 123,
    "pageToken": "<string>"
  }'
  ```

  ```python Python theme={"theme":{"light":"github-light","dark":"github-dark"}}
  import json
  import requests

  url = "http://localhost:7575/v2/state/active-contracts-page"
  headers = {'Authorization': 'Bearer <token>', 'Content-Type': 'application/json'}
  payload = json.loads(r'''{
    "activeAtOffset": 123,
    "eventFormat": {
      "filtersByParty": {},
      "filtersForAnyParty": {
        "cumulative": [
          {
            "identifierFilter": {
              "Empty": "<object>"
            }
          }
        ]
      },
      "verbose": false
    },
    "maxPageSize": 123,
    "pageToken": "<string>"
  }''')
  response = requests.request(
      "GET", url, headers=headers, json=payload
  )

  print(response.text)
  ```

  ```javascript JavaScript theme={"theme":{"light":"github-light","dark":"github-dark"}}
  const response = await fetch('http://localhost:7575/v2/state/active-contracts-page', {
    method: 'GET',
    headers: {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
  },
    body: JSON.stringify({
    "activeAtOffset": 123,
    "eventFormat": {
      "filtersByParty": {},
      "filtersForAnyParty": {
        "cumulative": [
          {
            "identifierFilter": {
              "Empty": "<object>"
            }
          }
        ]
      },
      "verbose": false
    },
    "maxPageSize": 123,
    "pageToken": "<string>"
  }),
  });

  console.log(await response.text());
  ```

  ```php PHP theme={"theme":{"light":"github-light","dark":"github-dark"}}
  <?php
  $curl = curl_init();

  curl_setopt_array($curl, [
      CURLOPT_URL => 'http://localhost:7575/v2/state/active-contracts-page',
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_CUSTOMREQUEST => 'GET',
      CURLOPT_POSTFIELDS => <<<'JSON'
  {
    "activeAtOffset": 123,
    "eventFormat": {
      "filtersByParty": {},
      "filtersForAnyParty": {
        "cumulative": [
          {
            "identifierFilter": {
              "Empty": "<object>"
            }
          }
        ]
      },
      "verbose": false
    },
    "maxPageSize": 123,
    "pageToken": "<string>"
  }
  JSON,
      CURLOPT_HTTPHEADER => [
          "Authorization: Bearer <token>",
          "Content-Type: application/json"
      ],
  ]);

  $response = curl_exec($curl);
  echo $response;
  ```

  ```go Go theme={"theme":{"light":"github-light","dark":"github-dark"}}
  package main

  import (
    "bytes"
    "fmt"
    "io"
    "net/http"
  )

  func main() {
    req, _ := http.NewRequest("GET", "http://localhost:7575/v2/state/active-contracts-page", bytes.NewBufferString(`{
    "activeAtOffset": 123,
    "eventFormat": {
      "filtersByParty": {},
      "filtersForAnyParty": {
        "cumulative": [
          {
            "identifierFilter": {
              "Empty": "<object>"
            }
          }
        ]
      },
      "verbose": false
    },
    "maxPageSize": 123,
    "pageToken": "<string>"
  }`))
    req.Header.Set("Authorization", "Bearer <token>")
    req.Header.Set("Content-Type", "application/json")
    response, _ := http.DefaultClient.Do(req)
    defer response.Body.Close()
    body, _ := io.ReadAll(response.Body)
    fmt.Println(string(body))
  }
  ```

  ```java Java theme={"theme":{"light":"github-light","dark":"github-dark"}}
  import java.net.URI;
  import java.net.http.HttpClient;
  import java.net.http.HttpRequest;
  import java.net.http.HttpResponse;

  var request = HttpRequest.newBuilder()
      .uri(URI.create("http://localhost:7575/v2/state/active-contracts-page"))
      .header("Authorization", "Bearer <token>")
      .header("Content-Type", "application/json")
      .method("GET", HttpRequest.BodyPublishers.ofString("""
  {
    "activeAtOffset": 123,
    "eventFormat": {
      "filtersByParty": {},
      "filtersForAnyParty": {
        "cumulative": [
          {
            "identifierFilter": {
              "Empty": "<object>"
            }
          }
        ]
      },
      "verbose": false
    },
    "maxPageSize": 123,
    "pageToken": "<string>"
  }
  """))
      .build();
  var response = HttpClient.newHttpClient().send(
      request, HttpResponse.BodyHandlers.ofString());
  System.out.println(response.body());
  ```

  ```ruby Ruby theme={"theme":{"light":"github-light","dark":"github-dark"}}
  require 'net/http'
  require 'uri'

  uri = URI('http://localhost:7575/v2/state/active-contracts-page')
  request = Net::HTTP::Get.new(uri)
  request['Authorization'] = 'Bearer <token>'
  request['Content-Type'] = 'application/json'
  request.body = <<~JSON
  {
    "activeAtOffset": 123,
    "eventFormat": {
      "filtersByParty": {},
      "filtersForAnyParty": {
        "cumulative": [
          {
            "identifierFilter": {
              "Empty": "<object>"
            }
          }
        ]
      },
      "verbose": false
    },
    "maxPageSize": 123,
    "pageToken": "<string>"
  }
  JSON
  response = Net::HTTP.start(uri.hostname, uri.port) do |http|
    http.request(request)
  end
  puts response.body
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={"theme":{"light":"github-light","dark":"github-dark"}}
  {
    "activeContracts": [
      {
        "workflowId": "<string>",
        "contractEntry": {
          "JsActiveContract": {
            "createdEvent": {
              "offset": 123,
              "nodeId": 123,
              "contractId": "<string>",
              "templateId": "<string>",
              "contractKey": "<string>",
              "contractKeyHash": "<string>",
              "createArgument": "<string>",
              "createdEventBlob": "<string>",
              "interfaceViews": [
                "<object>"
              ],
              "witnessParties": [
                "<string>"
              ],
              "signatories": [
                "<string>"
              ],
              "observers": [
                "<string>"
              ],
              "createdAt": "<string>",
              "packageName": "<string>",
              "representativePackageId": "<string>",
              "acsDelta": false
            },
            "synchronizerId": "<string>",
            "reassignmentCounter": 123
          }
        },
        "streamContinuationToken": "<string>"
      }
    ],
    "activeAtOffset": 123,
    "nextPageToken": "<string>"
  }
  ```

  ```text 400 theme={"theme":{"light":"github-light","dark":"github-dark"}}
  <string>
  ```

  ```json default theme={"theme":{"light":"github-light","dark":"github-dark"}}
  {
    "code": "<string>",
    "cause": "<string>",
    "correlationId": "<string>",
    "traceId": "<string>",
    "context": {},
    "resources": [
      [
        "<string>"
      ]
    ],
    "errorCategory": 123,
    "grpcCodeValue": 123,
    "retryInfo": "<string>",
    "definiteAnswer": false
  }
  ```
</ResponseExample>

## Authorizations

### httpAuth

<ParamField header="Authorization" type="string" required>
  HTTP bearer authentication. Send the token as `Authorization: Bearer &lt;token&gt;`. Ledger API standard JWT token
</ParamField>

### apiKeyAuth

<ParamField header="Sec-WebSocket-Protocol" type="string" required>
  API key authentication in the header. Ledger API standard JWT token (websocket)
</ParamField>

## Body

<div class="x2mdx-ref-badges">
  <span class="x2mdx-ref-badge x2mdx-ref-badge--neutral">application/json</span>
</div>

<ParamField body="activeAtOffset" type="number">
  OpenAPI type: <code>integer (int64)</code>.

  The offset at which the snapshot of the active contracts will be computed. Must be no greater than the current ledger end offset. Must be greater than or equal to the last pruning offset. Optional, if defined, it must be a valid absolute offset (positive integer) or ledger begin offset (zero). If zero, the empty set will be returned. If not defined, the current ledger end will be used and it will be populated in the response. Optional
</ParamField>

<ParamField body="eventFormat" type="object" required>
  OpenAPI type: <code>EventFormat</code>.

  A format for events which defines both which events should be included and what data should be computed and included for them. Note that some of the filtering behavior depends on the `TransactionShape`, which is expected to be specified alongside usages of `EventFormat`.

  <Expandable title="child attributes">
    <ParamField body="filtersByParty" type="object">
      OpenAPI type: <code>Map\_Filters</code>.

      Each key must be a valid PartyIdString (as described in `value.proto`). The interpretation of the filter depends on the transaction-shape being filtered: 1. For **ledger-effects** create and exercise events are returned, for which the witnesses include at least one of the listed parties and match the per-party filter. 2. For **transaction and active-contract-set streams** create and archive events are returned for all contracts whose stakeholders include at least one of the listed parties and match the per-party filter. Optional: can be empty
    </ParamField>

    <ParamField body="filtersForAnyParty" type="object">
      OpenAPI type: <code>Filters</code>.

      The union of a set of template filters, interface filters, or a wildcard.

      <Expandable title="child attributes">
        <ParamField body="cumulative" type="object[]">
          OpenAPI type: <code>CumulativeFilter\[]</code>.

          Every filter in the cumulative list expands the scope of the resulting stream. Each interface, template or wildcard filter means additional events that will match the query. The impact of include\_interface\_view and include\_created\_event\_blob fields in the filters will also be accumulated. A template or an interface SHOULD NOT appear twice in the accumulative field. A wildcard filter SHOULD NOT be defined more than once in the accumulative field. If no `CumulativeFilter` defined, the default of a single `WildcardFilter` with include\_created\_event\_blob unset is used. Optional: can be empty

          <Expandable title="child attributes">
            <ParamField body="identifierFilter" type="object">
              OpenAPI type: <code>IdentifierFilter</code>.

              Required

              <Expandable title="child attributes">
                <ParamField body="Variant 1" type="object">
                  <Expandable title="child attributes">
                    <ParamField body="Empty" type="object" required>
                      OpenAPI type: <code>Empty1</code>.
                    </ParamField>
                  </Expandable>
                </ParamField>

                <ParamField body="Variant 2" type="object">
                  <Expandable title="child attributes">
                    <ParamField body="InterfaceFilter" type="object" required>
                      OpenAPI type: <code>InterfaceFilter</code>.

                      This filter matches contracts that implement a specific interface.

                      <Expandable title="child attributes">
                        <ParamField body="value" type="object" required>
                          OpenAPI type: <code>InterfaceFilter1</code>.

                          This filter matches contracts that implement a specific interface.

                          <Expandable title="child attributes">
                            <ParamField body="interfaceId" type="string" required>
                              The interface that a matching contract must implement. The `interface_id` needs to be valid: corresponding interface should be defined in one of the available packages at the time of the query. Both package-name and package-id reference formats for the identifier are supported. Note: The package-id reference identifier format is deprecated. We plan to end support for this format in version 3.4. Required
                            </ParamField>

                            <ParamField body="includeInterfaceView" type="boolean">
                              Whether to include the interface view on the contract in the returned `CreatedEvent`. Use this to access contract data in a uniform manner in your API client. Optional
                            </ParamField>

                            <ParamField body="includeCreatedEventBlob" type="boolean">
                              Whether to include a `created_event_blob` in the returned `CreatedEvent`. Use this to access the contract create event payload in your API client for submitting it as a disclosed contract with future commands. Optional
                            </ParamField>
                          </Expandable>
                        </ParamField>
                      </Expandable>
                    </ParamField>
                  </Expandable>
                </ParamField>

                <ParamField body="Variant 3" type="object">
                  <Expandable title="child attributes">
                    <ParamField body="TemplateFilter" type="object" required>
                      OpenAPI type: <code>TemplateFilter</code>.

                      This filter matches contracts of a specific template.

                      <Expandable title="child attributes">
                        <ParamField body="value" type="object" required>
                          OpenAPI type: <code>TemplateFilter1</code>.

                          This filter matches contracts of a specific template.

                          <Expandable title="child attributes">
                            <ParamField body="templateId" type="string" required>
                              A template for which the payload should be included in the response. The `template_id` needs to be valid: corresponding template should be defined in one of the available packages at the time of the query. Both package-name and package-id reference formats for the identifier are supported. Note: The package-id reference identifier format is deprecated. We plan to end support for this format in version 3.4. Required
                            </ParamField>

                            <ParamField body="includeCreatedEventBlob" type="boolean">
                              Whether to include a `created_event_blob` in the returned `CreatedEvent`. Use this to access the contract event payload in your API client for submitting it as a disclosed contract with future commands. Optional
                            </ParamField>
                          </Expandable>
                        </ParamField>
                      </Expandable>
                    </ParamField>
                  </Expandable>
                </ParamField>

                <ParamField body="Variant 4" type="object">
                  <Expandable title="child attributes">
                    <ParamField body="WildcardFilter" type="object" required>
                      OpenAPI type: <code>WildcardFilter</code>.

                      This filter matches all templates.

                      <Expandable title="child attributes">
                        <ParamField body="value" type="object" required>
                          OpenAPI type: <code>WildcardFilter1</code>.

                          This filter matches all templates.

                          <Expandable title="child attributes">
                            <ParamField body="includeCreatedEventBlob" type="boolean">
                              Whether to include a `created_event_blob` in the returned `CreatedEvent`. Use this to access the contract create event payload in your API client for submitting it as a disclosed contract with future commands. Optional
                            </ParamField>
                          </Expandable>
                        </ParamField>
                      </Expandable>
                    </ParamField>
                  </Expandable>
                </ParamField>
              </Expandable>
            </ParamField>
          </Expandable>
        </ParamField>
      </Expandable>
    </ParamField>

    <ParamField body="verbose" type="boolean">
      If enabled, values served over the API will contain more information than strictly necessary to interpret the data. In particular, setting the verbose flag to true triggers the ledger to include labels for record fields. Optional
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="maxPageSize" type="number">
  OpenAPI type: <code>integer (int32)</code>.

  The result page will contain at most max\_page\_size entries of the respective active contract snapshot. The server might reject max\_page\_size breaching the server-specified limit. Optional, if not defined, the default will be determined by the server. Optional
</ParamField>

<ParamField body="pageToken" type="string">
  To get the next page of the active contracts snapshot, the `page_token` should be set to the `next_page_token` of the last `GetActiveContractsPageResponse`. The page token only works if subsequent requests: - are executed on the same participant, - use the same active\_at\_offset and event\_format, - and the participant's store was not pruned to after the active\_at\_offset. If not specified, the first page of the active contracts snapshot will be returned. Optional: can be empty
</ParamField>

## Responses

### 200

<div class="x2mdx-ref-badges">
  <span class="x2mdx-ref-badge x2mdx-ref-badge--neutral">application/json</span>
</div>

<ResponseField name="activeContracts" type="JsGetActiveContractsResponse[]" required>
  The collection of active contracts for this page response. Required: must be non-empty

  <Expandable title="child attributes">
    <ResponseField name="workflowId" type="string">
      The workflow ID used in command submission which corresponds to the contract\_entry. Only set if the `workflow_id` for the command was set. Must be a valid LedgerString (as described in `value.proto`). Optional
    </ResponseField>

    <ResponseField name="contractEntry" type="JsContractEntry">
      For a contract there could be multiple contract\_entry-s in the entire snapshot. These together define the state of one contract in the snapshot. A contract\_entry is included in the result, if and only if there is at least one stakeholder party of the contract that is hosted on the synchronizer at the time of the event and the party satisfies the `TransactionFilter` in the query. Required

      <Expandable title="child attributes">
        <ResponseField name="Variant 1" type="object">
          <Expandable title="child attributes">
            <ResponseField name="JsActiveContract" type="JsActiveContract" required>
              <Expandable title="child attributes">
                <ResponseField name="createdEvent" type="CreatedEvent" required>
                  Records that a contract has been created, and choices may now be exercised on it.

                  <Expandable title="child attributes">
                    <ResponseField name="offset" type="integer (int64)" required>
                      The offset of origin, which has contextual meaning, please see description at messages that include a CreatedEvent. Offsets are managed by the participant nodes. Transactions can thus NOT be assumed to have the same offsets on different participant nodes. It is a valid absolute offset (positive integer) Required
                    </ResponseField>

                    <ResponseField name="nodeId" type="integer (int32)" required>
                      The position of this event in the originating transaction or reassignment. The origin has contextual meaning, please see description at messages that include a CreatedEvent. Node IDs are not necessarily equal across participants, as these may see different projections/parts of transactions. Must be valid node ID (non-negative integer) Required
                    </ResponseField>

                    <ResponseField name="contractId" type="string" required>
                      The ID of the created contract. Must be a valid LedgerString (as described in `value.proto`). Required
                    </ResponseField>

                    <ResponseField name="templateId" type="string" required>
                      The template of the created contract. The identifier uses the package-id reference format. Required
                    </ResponseField>

                    <ResponseField name="contractKey" type="object">
                      The key of the created contract. This will be set if and only if `template_id` defines a contract key. Optional
                    </ResponseField>

                    <ResponseField name="contractKeyHash" type="string">
                      The hash of contract\_key. This will be set if and only if `template_id` defines a contract key. Optional: can be empty
                    </ResponseField>

                    <ResponseField name="createArgument" type="object" required>
                      The arguments that have been used to create the contract. Required
                    </ResponseField>

                    <ResponseField name="createdEventBlob" type="string">
                      Opaque representation of contract create event payload intended for forwarding to an API server as a contract disclosed as part of a command submission. Optional: can be empty
                    </ResponseField>

                    <ResponseField name="interfaceViews" type="JsInterfaceView[]">
                      Interface views specified in the transaction filter. Includes an `InterfaceView` for each interface for which there is a `InterfaceFilter` with - its party in the `witness_parties` of this event, - and which is implemented by the template of this event, - and which has `include_interface_view` set. Optional: can be empty

                      <Expandable title="child attributes">
                        <ResponseField name="interfaceId" type="string" required>
                          The interface implemented by the matched event. The identifier uses the package-id reference format. Required
                        </ResponseField>

                        <ResponseField name="viewStatus" type="JsStatus" required>
                          Whether the view was successfully computed, and if not, the reason for the error. The error is reported using the same rules for error codes and messages as the errors returned for API requests. Required

                          <Expandable title="child attributes">
                            <ResponseField name="code" type="integer (int32)" required />

                            <ResponseField name="message" type="string" required />

                            <ResponseField name="details" type="ProtoAny[]">
                              <Expandable title="child attributes">
                                <ResponseField name="typeUrl" type="string" required />

                                <ResponseField name="value" type="string" required />

                                <ResponseField name="unknownFields" type="UnknownFieldSet" required>
                                  <Expandable title="child attributes">
                                    <ResponseField name="fields" type="Map_Int_Field" required />
                                  </Expandable>
                                </ResponseField>

                                <ResponseField name="valueDecoded" type="string" />
                              </Expandable>
                            </ResponseField>
                          </Expandable>
                        </ResponseField>

                        <ResponseField name="viewValue" type="object">
                          The value of the interface's view method on this event. Set if it was requested in the `InterfaceFilter` and it could be successfully computed. Optional
                        </ResponseField>

                        <ResponseField name="implementationPackageId" type="string">
                          The package defining the interface implementation used to compute the view. Can be different from the package that was used to create the contract itself, as the contract arguments can be upgraded or downgraded using smart-contract upgrading as part of computing the interface view. Populated if the view computation is successful, otherwise empty. Optional
                        </ResponseField>
                      </Expandable>
                    </ResponseField>

                    <ResponseField name="witnessParties" type="string[]" required>
                      The parties that are notified of this event. When a `CreatedEvent` is returned as part of a transaction tree or ledger-effects transaction, this will include all the parties specified in the `TransactionFilter` that are witnesses of the event (the stakeholders of the contract and all informees of all the ancestors of this create action that this participant knows about). If served as part of a ACS delta transaction those will be limited to all parties specified in the `TransactionFilter` that are stakeholders of the contract (i.e. either signatories or observers). If the `CreatedEvent` is returned as part of an AssignedEvent, ActiveContract or IncompleteUnassigned (so the event is related to an assignment or unassignment): this will include all parties of the `TransactionFilter` that are stakeholders of the contract. The behavior of reading create events visible to parties not hosted on the participant node serving the Ledger API is undefined. Concretely, there is neither a guarantee that the participant node will serve all their create events on the ACS stream, nor is there a guarantee that matching archive events are delivered for such create events. For most clients this is not a problem, as they only read events for parties that are hosted on the participant node. If you need to read events for parties that may not be hosted at all times on the participant node, subscribe to the `TopologyEvent`s for that party by setting a corresponding `UpdateFormat`. Using these events, query the ACS as-of an offset where the party is hosted on the participant node, and ignore create events at offsets where the party is not hosted on the participant node. Required: must be non-empty
                    </ResponseField>

                    <ResponseField name="signatories" type="string[]" required>
                      The signatories for this contract as specified by the template. Required: must be non-empty
                    </ResponseField>

                    <ResponseField name="observers" type="string[]">
                      The observers for this contract as specified explicitly by the template or implicitly as choice controllers. This field never contains parties that are signatories. Optional: can be empty
                    </ResponseField>

                    <ResponseField name="createdAt" type="string" required>
                      Ledger effective time of the transaction that created the contract. Required
                    </ResponseField>

                    <ResponseField name="packageName" type="string" required>
                      The package name of the created contract. Required
                    </ResponseField>

                    <ResponseField name="representativePackageId" type="string" required>
                      A package-id present in the participant package store that typechecks the contract's argument. This may differ from the package-id of the template used to create the contract. For contracts created before Canton 3.4, this field matches the contract's creation package-id. NOTE: Experimental, server internal concept, not for client consumption. Subject to change without notice. Required
                    </ResponseField>

                    <ResponseField name="acsDelta" type="boolean" required>
                      Whether this event would be part of respective ACS\_DELTA shaped stream, and should therefore considered when tracking contract activeness on the client-side. Required
                    </ResponseField>
                  </Expandable>
                </ResponseField>

                <ResponseField name="synchronizerId" type="string" required>
                  A valid synchronizer id Required
                </ResponseField>

                <ResponseField name="reassignmentCounter" type="integer (int64)" required>
                  Each corresponding assigned and unassigned event has the same reassignment\_counter. This strictly increases with each unassign command for the same contract. Creation of the contract corresponds to reassignment\_counter equals zero. This field will be the reassignment\_counter of the latest observable activation event on this synchronizer, which is before the active\_at\_offset. Required
                </ResponseField>
              </Expandable>
            </ResponseField>
          </Expandable>
        </ResponseField>

        <ResponseField name="Variant 2" type="object">
          <Expandable title="child attributes">
            <ResponseField name="JsEmpty" type="JsEmpty" required />
          </Expandable>
        </ResponseField>

        <ResponseField name="Variant 3" type="object">
          <Expandable title="child attributes">
            <ResponseField name="JsIncompleteAssigned" type="JsIncompleteAssigned" required>
              <Expandable title="child attributes">
                <ResponseField name="assignedEvent" type="JsAssignedEvent" required>
                  Records that a contract has been assigned, and it can be used on the target synchronizer.

                  <Expandable title="child attributes">
                    <ResponseField name="source" type="string" required>
                      The ID of the source synchronizer. Must be a valid synchronizer id. Required
                    </ResponseField>

                    <ResponseField name="target" type="string" required>
                      The ID of the target synchronizer. Must be a valid synchronizer id. Required
                    </ResponseField>

                    <ResponseField name="reassignmentId" type="string" required>
                      The ID from the unassigned event. For correlation capabilities. Must be a valid LedgerString (as described in `value.proto`). Required
                    </ResponseField>

                    <ResponseField name="submitter" type="string">
                      Party on whose behalf the assign command was executed. Empty if the assignment happened offline via the repair service. Must be a valid PartyIdString (as described in `value.proto`). Optional
                    </ResponseField>

                    <ResponseField name="reassignmentCounter" type="integer (int64)" required>
                      Each corresponding assigned and unassigned event has the same reassignment\_counter. This strictly increases with each unassign command for the same contract. Creation of the contract corresponds to reassignment\_counter equals zero. Required
                    </ResponseField>

                    <ResponseField name="createdEvent" type="CreatedEvent" required>
                      Records that a contract has been created, and choices may now be exercised on it.

                      <Expandable title="child attributes">
                        <ResponseField name="offset" type="integer (int64)" required>
                          The offset of origin, which has contextual meaning, please see description at messages that include a CreatedEvent. Offsets are managed by the participant nodes. Transactions can thus NOT be assumed to have the same offsets on different participant nodes. It is a valid absolute offset (positive integer) Required
                        </ResponseField>

                        <ResponseField name="nodeId" type="integer (int32)" required>
                          The position of this event in the originating transaction or reassignment. The origin has contextual meaning, please see description at messages that include a CreatedEvent. Node IDs are not necessarily equal across participants, as these may see different projections/parts of transactions. Must be valid node ID (non-negative integer) Required
                        </ResponseField>

                        <ResponseField name="contractId" type="string" required>
                          The ID of the created contract. Must be a valid LedgerString (as described in `value.proto`). Required
                        </ResponseField>

                        <ResponseField name="templateId" type="string" required>
                          The template of the created contract. The identifier uses the package-id reference format. Required
                        </ResponseField>

                        <ResponseField name="contractKey" type="object">
                          The key of the created contract. This will be set if and only if `template_id` defines a contract key. Optional
                        </ResponseField>

                        <ResponseField name="contractKeyHash" type="string">
                          The hash of contract\_key. This will be set if and only if `template_id` defines a contract key. Optional: can be empty
                        </ResponseField>

                        <ResponseField name="createArgument" type="object" required>
                          The arguments that have been used to create the contract. Required
                        </ResponseField>

                        <ResponseField name="createdEventBlob" type="string">
                          Opaque representation of contract create event payload intended for forwarding to an API server as a contract disclosed as part of a command submission. Optional: can be empty
                        </ResponseField>

                        <ResponseField name="interfaceViews" type="JsInterfaceView[]">
                          Interface views specified in the transaction filter. Includes an `InterfaceView` for each interface for which there is a `InterfaceFilter` with - its party in the `witness_parties` of this event, - and which is implemented by the template of this event, - and which has `include_interface_view` set. Optional: can be empty

                          <Expandable title="child attributes">
                            <ResponseField name="interfaceId" type="string" required>
                              The interface implemented by the matched event. The identifier uses the package-id reference format. Required
                            </ResponseField>

                            <ResponseField name="viewStatus" type="JsStatus" required>
                              Whether the view was successfully computed, and if not, the reason for the error. The error is reported using the same rules for error codes and messages as the errors returned for API requests. Required

                              <Expandable title="child attributes">
                                <ResponseField name="code" type="integer (int32)" required />

                                <ResponseField name="message" type="string" required />

                                <ResponseField name="details" type="ProtoAny[]">
                                  <Expandable title="child attributes">
                                    <ResponseField name="typeUrl" type="string" required />

                                    <ResponseField name="value" type="string" required />

                                    <ResponseField name="unknownFields" type="UnknownFieldSet" required>
                                      <Expandable title="child attributes">
                                        <ResponseField name="fields" type="Map_Int_Field" required />
                                      </Expandable>
                                    </ResponseField>

                                    <ResponseField name="valueDecoded" type="string" />
                                  </Expandable>
                                </ResponseField>
                              </Expandable>
                            </ResponseField>

                            <ResponseField name="viewValue" type="object">
                              The value of the interface's view method on this event. Set if it was requested in the `InterfaceFilter` and it could be successfully computed. Optional
                            </ResponseField>

                            <ResponseField name="implementationPackageId" type="string">
                              The package defining the interface implementation used to compute the view. Can be different from the package that was used to create the contract itself, as the contract arguments can be upgraded or downgraded using smart-contract upgrading as part of computing the interface view. Populated if the view computation is successful, otherwise empty. Optional
                            </ResponseField>
                          </Expandable>
                        </ResponseField>

                        <ResponseField name="witnessParties" type="string[]" required>
                          The parties that are notified of this event. When a `CreatedEvent` is returned as part of a transaction tree or ledger-effects transaction, this will include all the parties specified in the `TransactionFilter` that are witnesses of the event (the stakeholders of the contract and all informees of all the ancestors of this create action that this participant knows about). If served as part of a ACS delta transaction those will be limited to all parties specified in the `TransactionFilter` that are stakeholders of the contract (i.e. either signatories or observers). If the `CreatedEvent` is returned as part of an AssignedEvent, ActiveContract or IncompleteUnassigned (so the event is related to an assignment or unassignment): this will include all parties of the `TransactionFilter` that are stakeholders of the contract. The behavior of reading create events visible to parties not hosted on the participant node serving the Ledger API is undefined. Concretely, there is neither a guarantee that the participant node will serve all their create events on the ACS stream, nor is there a guarantee that matching archive events are delivered for such create events. For most clients this is not a problem, as they only read events for parties that are hosted on the participant node. If you need to read events for parties that may not be hosted at all times on the participant node, subscribe to the `TopologyEvent`s for that party by setting a corresponding `UpdateFormat`. Using these events, query the ACS as-of an offset where the party is hosted on the participant node, and ignore create events at offsets where the party is not hosted on the participant node. Required: must be non-empty
                        </ResponseField>

                        <ResponseField name="signatories" type="string[]" required>
                          The signatories for this contract as specified by the template. Required: must be non-empty
                        </ResponseField>

                        <ResponseField name="observers" type="string[]">
                          The observers for this contract as specified explicitly by the template or implicitly as choice controllers. This field never contains parties that are signatories. Optional: can be empty
                        </ResponseField>

                        <ResponseField name="createdAt" type="string" required>
                          Ledger effective time of the transaction that created the contract. Required
                        </ResponseField>

                        <ResponseField name="packageName" type="string" required>
                          The package name of the created contract. Required
                        </ResponseField>

                        <ResponseField name="representativePackageId" type="string" required>
                          A package-id present in the participant package store that typechecks the contract's argument. This may differ from the package-id of the template used to create the contract. For contracts created before Canton 3.4, this field matches the contract's creation package-id. NOTE: Experimental, server internal concept, not for client consumption. Subject to change without notice. Required
                        </ResponseField>

                        <ResponseField name="acsDelta" type="boolean" required>
                          Whether this event would be part of respective ACS\_DELTA shaped stream, and should therefore considered when tracking contract activeness on the client-side. Required
                        </ResponseField>
                      </Expandable>
                    </ResponseField>
                  </Expandable>
                </ResponseField>
              </Expandable>
            </ResponseField>
          </Expandable>
        </ResponseField>

        <ResponseField name="Variant 4" type="object">
          <Expandable title="child attributes">
            <ResponseField name="JsIncompleteUnassigned" type="JsIncompleteUnassigned" required>
              <Expandable title="child attributes">
                <ResponseField name="createdEvent" type="CreatedEvent" required>
                  Records that a contract has been created, and choices may now be exercised on it.

                  <Expandable title="child attributes">
                    <ResponseField name="offset" type="integer (int64)" required>
                      The offset of origin, which has contextual meaning, please see description at messages that include a CreatedEvent. Offsets are managed by the participant nodes. Transactions can thus NOT be assumed to have the same offsets on different participant nodes. It is a valid absolute offset (positive integer) Required
                    </ResponseField>

                    <ResponseField name="nodeId" type="integer (int32)" required>
                      The position of this event in the originating transaction or reassignment. The origin has contextual meaning, please see description at messages that include a CreatedEvent. Node IDs are not necessarily equal across participants, as these may see different projections/parts of transactions. Must be valid node ID (non-negative integer) Required
                    </ResponseField>

                    <ResponseField name="contractId" type="string" required>
                      The ID of the created contract. Must be a valid LedgerString (as described in `value.proto`). Required
                    </ResponseField>

                    <ResponseField name="templateId" type="string" required>
                      The template of the created contract. The identifier uses the package-id reference format. Required
                    </ResponseField>

                    <ResponseField name="contractKey" type="object">
                      The key of the created contract. This will be set if and only if `template_id` defines a contract key. Optional
                    </ResponseField>

                    <ResponseField name="contractKeyHash" type="string">
                      The hash of contract\_key. This will be set if and only if `template_id` defines a contract key. Optional: can be empty
                    </ResponseField>

                    <ResponseField name="createArgument" type="object" required>
                      The arguments that have been used to create the contract. Required
                    </ResponseField>

                    <ResponseField name="createdEventBlob" type="string">
                      Opaque representation of contract create event payload intended for forwarding to an API server as a contract disclosed as part of a command submission. Optional: can be empty
                    </ResponseField>

                    <ResponseField name="interfaceViews" type="JsInterfaceView[]">
                      Interface views specified in the transaction filter. Includes an `InterfaceView` for each interface for which there is a `InterfaceFilter` with - its party in the `witness_parties` of this event, - and which is implemented by the template of this event, - and which has `include_interface_view` set. Optional: can be empty

                      <Expandable title="child attributes">
                        <ResponseField name="interfaceId" type="string" required>
                          The interface implemented by the matched event. The identifier uses the package-id reference format. Required
                        </ResponseField>

                        <ResponseField name="viewStatus" type="JsStatus" required>
                          Whether the view was successfully computed, and if not, the reason for the error. The error is reported using the same rules for error codes and messages as the errors returned for API requests. Required

                          <Expandable title="child attributes">
                            <ResponseField name="code" type="integer (int32)" required />

                            <ResponseField name="message" type="string" required />

                            <ResponseField name="details" type="ProtoAny[]">
                              <Expandable title="child attributes">
                                <ResponseField name="typeUrl" type="string" required />

                                <ResponseField name="value" type="string" required />

                                <ResponseField name="unknownFields" type="UnknownFieldSet" required>
                                  <Expandable title="child attributes">
                                    <ResponseField name="fields" type="Map_Int_Field" required />
                                  </Expandable>
                                </ResponseField>

                                <ResponseField name="valueDecoded" type="string" />
                              </Expandable>
                            </ResponseField>
                          </Expandable>
                        </ResponseField>

                        <ResponseField name="viewValue" type="object">
                          The value of the interface's view method on this event. Set if it was requested in the `InterfaceFilter` and it could be successfully computed. Optional
                        </ResponseField>

                        <ResponseField name="implementationPackageId" type="string">
                          The package defining the interface implementation used to compute the view. Can be different from the package that was used to create the contract itself, as the contract arguments can be upgraded or downgraded using smart-contract upgrading as part of computing the interface view. Populated if the view computation is successful, otherwise empty. Optional
                        </ResponseField>
                      </Expandable>
                    </ResponseField>

                    <ResponseField name="witnessParties" type="string[]" required>
                      The parties that are notified of this event. When a `CreatedEvent` is returned as part of a transaction tree or ledger-effects transaction, this will include all the parties specified in the `TransactionFilter` that are witnesses of the event (the stakeholders of the contract and all informees of all the ancestors of this create action that this participant knows about). If served as part of a ACS delta transaction those will be limited to all parties specified in the `TransactionFilter` that are stakeholders of the contract (i.e. either signatories or observers). If the `CreatedEvent` is returned as part of an AssignedEvent, ActiveContract or IncompleteUnassigned (so the event is related to an assignment or unassignment): this will include all parties of the `TransactionFilter` that are stakeholders of the contract. The behavior of reading create events visible to parties not hosted on the participant node serving the Ledger API is undefined. Concretely, there is neither a guarantee that the participant node will serve all their create events on the ACS stream, nor is there a guarantee that matching archive events are delivered for such create events. For most clients this is not a problem, as they only read events for parties that are hosted on the participant node. If you need to read events for parties that may not be hosted at all times on the participant node, subscribe to the `TopologyEvent`s for that party by setting a corresponding `UpdateFormat`. Using these events, query the ACS as-of an offset where the party is hosted on the participant node, and ignore create events at offsets where the party is not hosted on the participant node. Required: must be non-empty
                    </ResponseField>

                    <ResponseField name="signatories" type="string[]" required>
                      The signatories for this contract as specified by the template. Required: must be non-empty
                    </ResponseField>

                    <ResponseField name="observers" type="string[]">
                      The observers for this contract as specified explicitly by the template or implicitly as choice controllers. This field never contains parties that are signatories. Optional: can be empty
                    </ResponseField>

                    <ResponseField name="createdAt" type="string" required>
                      Ledger effective time of the transaction that created the contract. Required
                    </ResponseField>

                    <ResponseField name="packageName" type="string" required>
                      The package name of the created contract. Required
                    </ResponseField>

                    <ResponseField name="representativePackageId" type="string" required>
                      A package-id present in the participant package store that typechecks the contract's argument. This may differ from the package-id of the template used to create the contract. For contracts created before Canton 3.4, this field matches the contract's creation package-id. NOTE: Experimental, server internal concept, not for client consumption. Subject to change without notice. Required
                    </ResponseField>

                    <ResponseField name="acsDelta" type="boolean" required>
                      Whether this event would be part of respective ACS\_DELTA shaped stream, and should therefore considered when tracking contract activeness on the client-side. Required
                    </ResponseField>
                  </Expandable>
                </ResponseField>

                <ResponseField name="unassignedEvent" type="UnassignedEvent" required>
                  Records that a contract has been unassigned, and it becomes unusable on the source synchronizer

                  <Expandable title="child attributes">
                    <ResponseField name="reassignmentId" type="string" required>
                      The ID of the unassignment. This needs to be used as an input for a assign ReassignmentCommand. Must be a valid LedgerString (as described in `value.proto`). Required
                    </ResponseField>

                    <ResponseField name="contractId" type="string" required>
                      The ID of the reassigned contract. Must be a valid LedgerString (as described in `value.proto`). Required
                    </ResponseField>

                    <ResponseField name="templateId" type="string" required>
                      The template of the reassigned contract. The identifier uses the package-id reference format. Required
                    </ResponseField>

                    <ResponseField name="source" type="string" required>
                      The ID of the source synchronizer Must be a valid synchronizer id Required
                    </ResponseField>

                    <ResponseField name="target" type="string" required>
                      The ID of the target synchronizer Must be a valid synchronizer id Required
                    </ResponseField>

                    <ResponseField name="submitter" type="string">
                      Party on whose behalf the unassign command was executed. Empty if the unassignment happened offline via the repair service. Must be a valid PartyIdString (as described in `value.proto`). Optional
                    </ResponseField>

                    <ResponseField name="reassignmentCounter" type="integer (int64)" required>
                      Each corresponding assigned and unassigned event has the same reassignment\_counter. This strictly increases with each unassign command for the same contract. Creation of the contract corresponds to reassignment\_counter equals zero. Required
                    </ResponseField>

                    <ResponseField name="assignmentExclusivity" type="string">
                      Assignment exclusivity Before this time (measured on the target synchronizer), only the submitter of the unassignment can initiate the assignment Defined for reassigning participants. Optional
                    </ResponseField>

                    <ResponseField name="witnessParties" type="string[]" required>
                      The parties that are notified of this event. Required: must be non-empty
                    </ResponseField>

                    <ResponseField name="packageName" type="string" required>
                      The package name of the contract. Required
                    </ResponseField>

                    <ResponseField name="offset" type="integer (int64)" required>
                      The offset of origin. Offsets are managed by the participant nodes. Reassignments can thus NOT be assumed to have the same offsets on different participant nodes. Must be a valid absolute offset (positive integer) Required
                    </ResponseField>

                    <ResponseField name="nodeId" type="integer (int32)" required>
                      The position of this event in the originating reassignment. Node IDs are not necessarily equal across participants, as these may see different projections/parts of reassignments. Must be valid node ID (non-negative integer) Required
                    </ResponseField>
                  </Expandable>
                </ResponseField>
              </Expandable>
            </ResponseField>
          </Expandable>
        </ResponseField>
      </Expandable>
    </ResponseField>

    <ResponseField name="streamContinuationToken" type="string">
      Opaque representation of a continuation token which can be used in the request to bypass the already processed part of the active contracts snapshot. Only populated for the streaming `GetActiveContracts` rpc call. Optional: can be empty
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="activeAtOffset" type="integer (int64)" required>
  The active\_at\_offset which was specified in the request, or the calculated active\_at\_offset from the actual ledger end from at the evaluation of the request. Required
</ResponseField>

<ResponseField name="nextPageToken" type="string">
  If not present this is the last page. If present, this token must be used to get the next page. Optional: can be empty
</ResponseField>

### 400

Invalid value, Invalid value for: body

<div class="x2mdx-ref-badges">
  <span class="x2mdx-ref-badge x2mdx-ref-badge--neutral">text/plain</span>
</div>

<ResponseField name="value" type="string" required />

### default

<div class="x2mdx-ref-badges">
  <span class="x2mdx-ref-badge x2mdx-ref-badge--neutral">application/json</span>
</div>

<ResponseField name="code" type="string" required />

<ResponseField name="cause" type="string" required />

<ResponseField name="correlationId" type="string" />

<ResponseField name="traceId" type="string" />

<ResponseField name="context" type="Map_String" required />

<ResponseField name="resources" type="Tuple2_String_String[]" />

<ResponseField name="errorCategory" type="integer (int32)" required />

<ResponseField name="grpcCodeValue" type="integer (int32)" />

<ResponseField name="retryInfo" type="string" />

<ResponseField name="definiteAnswer" type="boolean" />

## History

<div class="x2mdx-ref-history" aria-label="Reference history">
  <div class="x2mdx-ref-history-event x2mdx-ref-history-event--deprecated" id="history-deprecated-3-5">
    <div class="x2mdx-ref-history-event-head">
      <span class="x2mdx-ref-history-event-label">Deprecated</span>
      <code class="x2mdx-ref-history-event-version">3.5</code>
    </div>
  </div>

  <div class="x2mdx-ref-history-event x2mdx-ref-history-event--introduced" id="history-added-3-5">
    <div class="x2mdx-ref-history-event-head">
      <span class="x2mdx-ref-history-event-label">Added</span>
      <code class="x2mdx-ref-history-event-version">3.5</code>
    </div>
  </div>
</div>