AppFoundry OAuth Token Refresh Failure in Multi-Org Setup

Could someone clarify why the refresh_token grant type returns a 401 Unauthorized error specifically for secondary organizations in our multi-org integration?

Environment details:

  • Genesys Cloud API v2
  • Node.js SDK 3.2.1
  • AppFoundry Partner Account
  • US East region

The initial token generation succeeds, but the refresh fails with ‘invalid_grant’ after exactly 1 hour. Primary org tokens refresh without issue.