# Pay API v11 Release Notes

Below are the updates and releases on v11 for the Travelport TripServices Pay APIs.

Version numbering uses this format:

*{year of release}*.*{major model # of release}*.*{minor version of release}*

**Releases:**

- [Version 11 Release - All APIs](#version-11-release---all-pay-apis)


## Version 11 Release - All Pay APIs

The Pay APIs were updated to v11 in June 2022. The following updates apply across all the Pay APIs:

- Version and model updates: The Payment Card domain was upgraded from version “6.0.6.19080614-FINAL” to “11.4.3-FINAL” and REST Framework from “4.4.1” to “5.4.0-SNAPSHOT”.
- Transaction and trace IDs: All Pay APIs support separate trace and transaction IDs. These assist in troubleshooting, and help customers track their transactions across those APIs. They replace the previous process to set the TrackId.
- Completion Code Description: Pay API responses were enhanced to return error descriptions along with [error codes](/docs/pay/general/pay-api-response-codes) to make the response more informational.