Authorize transactions

Trigger: A merchant, customer, or payment gateway submits a request to process a financial transaction.

1. Receive the transaction authorization request
2. Validate account status and verify available funds or credit limit
3. Evaluate transaction against real-time fraud detection and risk models
4. Confirm security credentials like PIN or CVV
5. Generate the authorization decision to approve or decline
6. Transmit the authorization code or decline message back to the requesting party

Outcome: The transaction request is approved with an authorization code, declined, or routed for manual review based on available funds and risk parameters.