WEM Data Action Integration Failing with 422 on ServiceNow Incident Creation

Looking for advice on a persistent 422 Unprocessable Entity error when triggering a Data Action from Genesys Workforce Engagement to create a ServiceNow incident.

Context:

  • Genesys Cloud: 2024-03.0
  • ServiceNow: Washington DC
  • Integration: Data Action (HTTP POST) via Architect Flow triggered by a WEM wrap-up event
  • Endpoint: /api/now/table/incident

The flow executes successfully within Architect, confirming the webhook payload structure. However, the ServiceNow instance rejects the request with a 422 error. The error body indicates short_description is missing or invalid, despite the payload explicitly including this field as a required parameter in the Data Action configuration. Debug logs show the payload is correctly formatted JSON with all mandatory fields populated. This issue occurs consistently across multiple test agents, suggesting a configuration mismatch rather than data-specific anomalies.

Question:
Has anyone encountered similar 422 errors when integrating WEM wrap-up events with ServiceNow via Data Actions? Are there specific field mapping requirements or payload transformations needed for ServiceNow to accept the incident creation request? I have cross-referenced the Genesys documentation and ServiceNow REST API guides, but the discrepancy remains unresolved. Any insights into potential hidden validation rules or required headers would be appreciated.