Payment Authorization

Overview

Payment authorization evaluates whether a proposed transaction is permitted before settlement. The decision can consider identity, credential validity, funds, limits, risk, merchant, asset, amount, destination, sanctions, and account status.

Authorization differs from authentication and final settlement. A valid user may lack permission for a particular payment, while an approved transaction can later fail, expire, reverse, or remain unconfirmed depending on the payment rail.

Systems should bind authorization to exact transaction details, prevent replay, record policy and approver, apply least privilege, and handle changes through a new decision. High-impact actions may require multiple approvals or independent out-of-band confirmation. Policy changes should be versioned so historical decisions remain explainable during disputes.

Payment authorization is the decision that a specific payer, account, or credential may execute a defined transaction under current rules and limits. Authorization answers whether this exact payment is allowed now, not merely whether the requester authenticated or settlement will ultimately succeed.

For Payment Authorization, the trust decision should establish the decision that a specific payer, account, or credential may execute a defined transaction under current rules and limits and bind the result to the requested action and protected resource. Teams should test issuance, storage, validation, expiry, revocation, recovery, and privileged override for permissions and protected actions, rather than checking only a successful request. Logs concerning the Payment permission decision and permissions and protected actions should support investigation without exposing reusable secrets or unnecessary personal data.

Review of Payment Authorization should compare permitted and rejected actions related to permissions and protected actions, confirm that recovery cannot bypass the primary safeguard, and remove obsolete access promptly.