# Acquirer Custom Data
source: https://developer.mastercard.com/mastercard-gateway/documentation/gateway-features/data-and-reporting/supp-data/acq-custom-data/index.md

Acquirer custom data includes any additional information requested by the acquirer, which cannot be passed using other available data fields. The custom data is stored in the database, which can be used in creating reports outside your payment service provider.

The following methods are supported:

| Integration methods | Payment methods |                Transactions                 |
|---------------------|-----------------|---------------------------------------------|
| All                 | All             | * AUTHORIZE * CAPTURE * PAY * REFUND * VOID |

To submit acquirer custom data, use the `transaction.acquirer.customData` field in the request. The field must not contain sensitive data.

The submitted data is returned in the transaction response.
**Acquirer Custom Data API Reference** [\[REST\]](https://developer.mastercard.com/mastercard-gateway/documentation/api-reference/v100/rest/api-ops/index.md#transaction) [\[NVP\]](https://developer.mastercard.com/mastercard-gateway/documentation/api-reference/v100/nvp/api-ops/index.md#transaction)