# Update Account Contract Data
source: https://developer.mastercard.com/mastercard-processing-core/documentation/sandbox-testing/data-management/update-acc-contract-data/index.md

## Test case -- Success {#test-case--success}

This test case describes updating data for a specified account contract in the CMS.

Note: The field that you do not want to change must not be in the request. The field sent in the request with a null value explicitly will be cleared in the CMS. **Sample request**

<br />

`PATCH /accounts/60001 -H 'If-Match: "7fedf39c3c2952a62821de4b480d1d6f"'`

```JSON
{
  "accountContractName": "North Division Account",
  "cbsNumber": "CBS83863371812033"
}
```

**Sample response**

`204`

## Test case -- Fail -- Duplicated cbsNumber {#test-case--fail--duplicated-cbsnumber}

This test case describes an attempt to update the data for a specified account contract with the `cbsNumber`, which already exists in the CMS.

For this test case, use the following information in the request:

|             Field             |   Available value   |
|-------------------------------|---------------------|
| accountContractData.cbsNumber | CBS1950395609519670 |

**Sample request**

`PATCH /accounts/60001 -H 'If-Match: "5c7d022061b0874200bfed735c6b9308"'`

```JSON
{
  "accountContractName": "North Division Account",
  "cbsNumber": "CBS1950395609519670"
}
```

**Sample response**

`400`

```JSON
{
  "Errors": {
    "Error": [
      {
        "Source": "MASTERCARD PROCESSING",
        "ReasonCode": "DUPLICATED_CBS_NUMBER",
        "Description": "Duplicated CBS number.",
        "Recoverable": false
      }
    ]
  }
}
```

## Test case -- Fail -- Not an Account Contract {#test-case--fail--not-an-account-contract}

This test case describes an attempt to update the data for a specified account contract in the CMS which is not an account contract.

For this test case, use the following information in the request:

|    Path parameter     | Available value |
|-----------------------|-----------------|
| `account_contract_id` | 101223          |

**Sample request**

`PATCH /accounts/101223 -H 'If-Match: "5c7d022061b0874200bfed735c6b9308"'`

```JSON
{
  "accountContractName": "North Division Account",
  "cbsNumber": "CBS83863371812033"
}
```

**Sample response**

`400`

```JSON
{
  "Errors": {
    "Error": [
      {
        "Source": "MASTERCARD PROCESSING",
        "ReasonCode": "NOT_ACCOUNT_CONTRACT",
        "Description": "Contract with id 101223 is not an account.",
        "Recoverable": false
      }
    ]
  }
}
```