1. Map the customer journey
Document where payment begins, whether a redirect is involved and what customers see after success, failure or abandonment.
2. Assign sources of truth
Agree how your systems confirm transaction status. Distinguish customer-facing return pages from the provider’s authoritative transaction updates.
3. Plan exceptions
Discuss interrupted requests, retries, duplicate events, delayed responses, refunds and reconciliation. Confirm exact behavior using provider documentation.
4. Separate testing and launch
Agree on test credentials, supported test scenarios, ownership of acceptance testing and the criteria for production readiness.
5. Prepare the operations team
Make sure support teams understand order references, payment statuses, escalation routes and where to find reconciliation information.
Use the selected provider’s current technical documentation to confirm interfaces and event behavior.
