This section provides a central reference for gateway response codes and verification results returned by the DPO Pay API.
Use these references to interpret transaction outcomes, handle errors correctly, and build reliable post-payment logic in your integration.
Whether you’re debugging a failed transaction or validating a successful one, these pages explain what the gateway returned — and what to do next.
When to use this section
You’ll typically refer to these pages when you need to:
- Interpret payment outcomes returned by the gateway
- Handle declines, errors, or pending states correctly
- Map gateway responses to user-friendly messages
- Confirm final transaction status during verification flows
For implementation guidance, see the relevant Transaction Operations or Transaction Payment Options pages, then return here to understand the responses.