WFM API 403 Forbidden on Bulk Assignment Update via Multi-Tenant AppFoundry Integration

We are currently debugging a persistent 403 Forbidden error when attempting to update agent assignments via the Workforce Management API (/api/v2/wfm/users/{userId}/assignments) within our AppFoundry partner application. This application manages workforce scheduling across multiple Genesys Cloud organizations using the Platform API with multi-org OAuth.

Specifically, our backend service successfully authenticates and retrieves the necessary user details, but fails when posting bulk assignment updates. The error response indicates that the application lacks the required permissions, despite the OAuth scopes including ‘wfm:user:manage’ and ‘wfm:assignment:manage’. The issue appears to be intermittent, affecting approximately 15% of our client organizations, while others function correctly.

Environment details:

  • Genesys Cloud API Version: v2
  • SDK: Node.js @genesyscloud/sdk-core v2.0.0
  • OAuth Grant Type: Client Credentials
  • Scopes: wfm:user:manage, wfm:assignment:manage, user:read

We have verified that the service account associated with the OAuth client has the ‘WFM Admin’ role in the affected organizations. Additionally, the API rate limits do not appear to be the cause, as the requests are spaced appropriately and do not trigger 429 Too Many Requests errors.

Has anyone encountered similar permission issues with bulk assignment updates in a multi-tenant AppFoundry context? Are there additional permissions or configuration steps required for the WFM API that are not documented in the standard AppFoundry requirements?