OAuth2 Token Refresh Failure in ServiceNow Data Action for Digital Channels

What is the reason this setting causes intermittent 401 Unauthorized errors when the Architect flow invokes a Data Action to create a ServiceNow incident from a chat transcript? The environment runs Genesys Cloud Release 2025-01. The webhook payload includes a valid Bearer token initially, but subsequent retries within the same session fail authentication. ServiceNow logs indicate the token has expired despite the GC OAuth integration being configured for automatic refresh. How do we force token regeneration within the Data Action execution context?