Webchat SDK 403 Forbidden on Widget Config Update

Anyone know why the Webchat SDK (v4.2.1) returns a 403 Forbidden error when attempting to update widget configuration via the Partner API? This occurs specifically when the integration runs under a multi-org OAuth context with limited scope permissions.

Environment details:

  • Genesys Cloud Version: 2023.10.0
  • OAuth Scope: webchat:widget:write
  • Error Response: {"errors":["Insufficient permissions to modify widget settings"]}

The token validates correctly for read operations, but write attempts fail immediately.