| Name | Type | Description | Notes |
|---|---|---|---|
| merchant_ref | str | Merchant reference code. Used by FirstAPI and reflected in settlement records and webhook notifications. Typically, the merchantRef field is the purchase order number or unique sequence value associated to a given transaction. | [optional] |
| transaction_type | str | Type of transaction merchant wants to process. | |
| customer | Customer | ||
| merchant | Merchant | ||
| device | FraudRegistrationDevice | [optional] | |
| user_defined | object | A JSON object that can carry any additional information that might be helpful for fraud detection. | [optional] |