Added
Transaction validation rules
August 19th, 2026
Validation rules can now be attached to transactions.
What's new
Transaction validation rules follow the same configuration model as payment order and incoming payment rules: criteria, ordered validations, execution triggers, and retry logic all apply.
One difference: since transactions are already booked on your account, Mambu Payments cannot act on them (no cancellation or rejection). Validation results are recorded on the transaction object for your own orchestration and audit purposes.
The transaction_validation object is now present on transaction payloads, with the same schema as on payment orders and incoming payments.