Order identifier field.

Amount to be canceled/refunded, in cents. Note: 1. Check if your acquirer supports the cancelling or refunding of operations.
2. If the value for Amount is "0" (zero), or if Amount is not sent, the refund will consider the total captured amount.

Indicates that the transaction was voided due to a fraud risk identified by the merchant. Possible value: "HighRisk". Size: 8.
Required if the transaction is voided because there is a fraud risk.
Valid for full or partial void.
Warning: This parameter will be available as of 04/17/2026.

Store identifier in the API.

Public key for dual authentication in the API.

Store-defined request identifier used when the merchant uses different servers for each GET/POST/PUT.