> ## Documentation Index
> Fetch the complete documentation index at: https://docs.open-metadata.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Contract Versions

> Track version history of data contract changes

# Data Contract Versions

Every change to a data contract creates a new version. Use the versions API to list all versions and retrieve a specific version.

## List Versions

<ParamField path="id" type="string" required>
  UUID of the data contract.
</ParamField>

## Get Specific Version

Use `GET /v1/dataContracts/{id}/versions/{version}` to retrieve a specific version.

<ParamField path="version" type="string" required>
  Version number in `major.minor` format (e.g., `0.1`, `0.2`, `1.0`).
</ParamField>

<RequestExample dropdown>
  ```python GET /v1/dataContracts/{id}/versions theme={null}
  from metadata.sdk import configure
  from metadata.sdk.entities import DataContracts

  configure(
      host="https://your-company.open-metadata.org/api",
      jwt_token="your-jwt-token"
  )

  # List all versions
  versions = DataContracts.list_versions("f7a1b2c3-d4e5-6789-0abc-def123456789")
  for v in versions:
      print(f"v{v.version}: {v.updatedBy} at {v.updatedAt}")

  # Get specific version
  contract_v1 = DataContracts.get_version(
      "f7a1b2c3-d4e5-6789-0abc-def123456789",
      "0.1"
  )
  ```

  ```java GET /v1/dataContracts/{id}/versions theme={null}
  // List versions using the client
  var history = client.dataContracts().listVersions(contractId);
  for (var version : history.getVersions()) {
      System.out.println("v" + version.getVersion());
  }
  ```

  ```bash GET /v1/dataContracts/{id}/versions theme={null}
  # List all versions
  curl "{base_url}/api/v1/dataContracts/f7a1b2c3-d4e5-6789-0abc-def123456789/versions" \
    -H "Authorization: Bearer {access_token}"

  # Get specific version
  curl "{base_url}/api/v1/dataContracts/f7a1b2c3-d4e5-6789-0abc-def123456789/versions/0.2" \
    -H "Authorization: Bearer {access_token}"
  ```
</RequestExample>

<ResponseExample>
  ```json Response (List Versions) theme={null}
  {
    "entityType": "dataContract",
    "versions": [
      "{\"id\":\"f7a1b2c3-d4e5-6789-0abc-def123456789\",\"name\":\"sales-orders-contract\",\"version\":0.2,\"entityStatus\":\"Active\"}",
      "{\"id\":\"f7a1b2c3-d4e5-6789-0abc-def123456789\",\"name\":\"sales-orders-contract\",\"version\":0.1,\"entityStatus\":\"Draft\"}"
    ]
  }
  ```
</ResponseExample>

***

## Version Numbering

| Change Type                                       | Version Impact             | Example                 |
| ------------------------------------------------- | -------------------------- | ----------------------- |
| Minor field updates (description, display name)   | Minor bump (`0.1` → `0.2`) | Update description      |
| Major structural changes (status, schema, entity) | Major bump (`0.2` → `1.0`) | Change status to Active |

***

## Error Handling

| Code  | Error Type     | Description                             |
| ----- | -------------- | --------------------------------------- |
| `401` | `UNAUTHORIZED` | Invalid or missing authentication token |
| `403` | `FORBIDDEN`    | User lacks permission                   |
| `404` | `NOT_FOUND`    | Data contract or version not found      |