Data Action Fails to Update WFM Schedule Group Attributes

Looking for advice on integrating our custom shift swap approval workflow with Genesys Cloud WFM. The Architect flow triggers a Data Action to update the schedule group via the REST API, but it consistently returns a 400 Bad Request. The payload structure matches the documentation exactly, yet the error response lacks specific field validation details.

The environment is running the latest patch level. We have verified the service account permissions include WfmSchedulesEdit. Does the WFM API reject batch updates initiated by Data Actions, or is there a hidden constraint on the concurrency limits field that causes this failure?

Have you tried inspecting the raw HTTP response headers for the WFM API call? The 400 error often masks a schema validation failure that doesn’t appear in the standard body.

Check if the scheduleGroupId is being passed as a string instead of an integer in the JSON payload, as the WFM endpoint is strict about type casting.