A successful HTTP response does not always mean a financial transaction has completed. Your application should evaluate technical responses, payment states and order outcomes separately. This page is a design checklist; it does not provide unverified endpoints or working access keys.
Clarify the request model
Check the current API specification for amount units, currency precision and business transaction reference uniqueness. Do not send production requests using assumed amount formats or field names.
- Confirm authentication methods and key rotation workflows.
- Verify idempotency scope for both client and provider.
- Define timeout and retry rules separately.
Process notifications securely
Implement webhook signatures or other verification methods according to the current specification. Test repeated events and out-of-order delivery. Notification receipt and business-record processing should be separately traceable.
Confirm transaction and financial outcomes
Use status queries to investigate the final outcome of uncertain transactions. Link cancellation and refund responses to the same business reference. Production connection details should be shared through a secure channel once the technical scope is clear.