FPS transaction's end to end ID.

Form3 return reason code. Must be one of the following 14 codes:

• 00000001—Beneficiary sort code/account number unknown
• 00000002—Beneficiary account closed
• 00000003—Beneficiary account stopped
• 00000004—Beneficiary deceased
• 00000005—Account cannot be identified without data in reference field
• 00000006—Beneficiary account name does not match beneficiary account number
• 00000007—Return requested by sender of original payment
• 00000008—Account is not in currency quoted
• 00000009—Beneficiary not expecting funds/instructed return
• 00000010—Terms and conditions of account do not permit crediting of these funds
• 00000011—Sending institution action required
• 00000012—Account transferred
• 00000013—Payment cannot be applied because of beneficiary sensitivities
• 00000014—Reason not given

Amount to return. Must match the original transaction amount, since the Pismo platform does not support partial returns.

Account token—token encoded with a Pismo account ID. Tokens can expire quickly, which can result in a 401 Unauthorized message.

Organization ID

A UUID to ensure the operation remains idempotent, allowing for operation repetition without causing unintended effects or duplication. An idempotent operation is one that can be applied multiple times, yet the outcome remains the same. it ensures that network errors, retries, or failures can occur without introducing inconsistencies.

Request tracking identifier. If not provided, a random UUID will be generated.