# Rule Update Merchant Category Code
source: https://developer.mastercard.com/account-catalog-services/documentation/testing/pan-registration-bau/alm-b2b-pan/9-alm-b2b-pan/index.md

* Existing rule: Any transaction between 0 USD to 50000 USD and Specific Merchant Category Code ( Merchant Type - 7622) Graduates to MAB.
* Update request to change the merchant category code to - 7644. Any transaction between 0 USD to 50000 USD and Specific Merchant Category Code ( Merchant Type - 7644) Graduates to MVG.

### Account Catalog Services API Request {#account-catalog-services-api-request}

* `requestId`: "request6"
* authorization: "reqKey"

* JSON

```JSON
{
  "accountIdentifier": "5XXXXXXXXXXXXX00087",
  "accountIndicator": "PRIMARY_ACCOUNT_NUMBER",
  "accountLevelManagement": {
    "accountIdentifierStatus": "A",
    "productRules": [
      {
        "productRuleId": "94031e99-8d47-4caa-bffd-fd0bdcafd74f",
        "productRuleStatus": "A",
        "productGraduationProductCode": "MVG",
        "posCountryCode": "",
        "cardholderTransactionTypeCode": "",
        "amountTransactionLow": "0",
        "amountTransactionHigh": "50000",
        "currencyCodeTransaction": "840",
        "merchantType": "7644",
        "acquiringInstitutionIDCode": "",
        "mastercardAssignedID": "",
        "cardAcceptorIDCode": "",
        "subMerchantID": ""
      }
    ]
  }
}
```

### Account Catalog Services API Response {#account-catalog-services-api-response}

* `requestId`: "request6"

* JSON

```JSON
{
  "accountIdentifier": "5XXXXXXXXX0087",
  "accountIndicator": "PRIMARY_ACCOUNT_NUMBER",
  "accountLevelManagement": {
    "productRules": [
      {
        "productRuleStatus": "A",
        "posCountryCode": "",
        "cardholderTransactionTypeCode": "",
        "amountTransactionLow": "0",
        "amountTransactionHigh": "50000",
        "currencyCodeTransaction": "840",
        "merchantType": "7644",
        "acquiringInstitutionIDCode": "",
        "mastercardAssignedID": "",
        "cardAcceptorIDCode": "",
        "subMerchantID": "",
        "ccProcessingCodes": [],
        "productRuleId": "94031e99-8d47-4caa-bffd-fd0bdcafd74f",
        "responseIndicator": "ACCEPTED",
        "responseType": "FINAL",
        "almServiceCode": "00616",
        "almServiceProductCode": "MVG",
        "almServiceProductClass": "MVG",
        "accountCategoryCode": "P",
        "actionCodes": [],
        "rejectCodes": [],
        "almServiceRateType": "XXX",
        "serviceClassificationCodes": []
      }
    ]
  }
}
```