Create a case for an existing entity

Open a case for a previously verified entity.

Use existingRootEntity to create a case for a previously verified entity. Set initialState to IN_PROGRESS to submit the case straight away instead of saving it as a draft.

Required scope: case-management

Request

mutation createCase($input: CreateCaseInput!) {
  createCase(input: $input) {
    ... on CaseInformation {
      caseId
      name
      entities {
        entityId
        legalName
      }
    }
    ... on ValidationErrors {
      errors {
        message
      }
    }
  }
}

Variables

{
  "input": {
    "organizationId": "3f2b8c1e9a4d4e7f8b6c5d4e3f2a1b0c",
    "officeId": "8e7d6c5b4a3f4e2d9c1b0a9f8e7d6c5b",
    "initialState": "IN_PROGRESS",
    "reference": "MAT-2026-0192",
    "existingRootEntity": {
      "entityId": "5102"
    }
  }
}

Response

{
  "data": {
    "createCase": {
      "caseId": "48215",
      "name": "Citizen Family Trust",
      "entities": [
        {
          "entityId": "5102",
          "legalName": "Citizen Family Trust"
        }
      ]
    }
  }
}

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