API REST Migration Deadlines
UPS, FedEx, USPS, and DHL are all migrating from XML based APIs to oauth JSON "REST" (not actually restful) APIs.
Deprecation dates of legacy APIs:
- UPS -
2024/06/032024-08-05 - FedEx - 2024/08/31
- USPS Label APIs Webtools - 2024/07/14
- USPS Webtools - 2025/01/25
- DHL - TBD