API Versioning

There are multiple versions of the ODS Inquiry API specification, each of which is detailed in Inquiry Specifications. The ODS Application supports calls to the following Inquiry API specification versions:

ODS Inquiry API - V2 (Deprecated)

Migration Guide from V1 to V2. This API is deprecated, the final release that will support this API is 2026.4, it will be unsupported and removed in 2027.1. Use ODS Inquiry API V3 from 2025.4 instead, see the V3 Migration Guide.

ODS Inquiry API - V1 (Deprecated)

This API is deprecated, the final release that will support this API is 2026.1, it will be unsupported and removed in 2026.2. Use ODS Inquiry API V2 or V3 instead, see the V2 Migration Guide and then the V3 Migration Guide.