Data Action 'Create Incident' returns 400 Bad Request despite valid JSON in Genesys Cloud Digital Channel Flow

NICE CXone API & Integrations
1

Context:

The integration pipeline between Genesys Cloud (GC) and ServiceNow is failing at the final execution step. The environment is a BYOC deployment in eu-west-2, running the latest stable release. The workflow is triggered via a Digital Messaging conversation event, specifically when a customer sends a message containing keywords tagged for high-priority support.

The flow utilizes a Data Action configured to call the ServiceNow REST API endpoint /api/now/table/incident. The payload is constructed using JSONata mapping within the Data Action configuration, pulling fields such as u_customer_email, u_message_body, and u_gc_conversation_id from the incoming webhook payload.

When the flow executes, the Data Action returns a 400 Bad Request error. The error response body from ServiceNow is:

{
 "error": {
 "message": "Mandatory field 'short_description' is missing",
 "detail": "The field 'short_description' is required for this table."
 }
}

However, the JSONata mapping explicitly includes short_description: $.message_body. Debugging the flow shows that $.message_body contains valid string data. The ServiceNow table schema confirms that short_description is mandatory and has a maximum length of 4000 characters. The payload being sent, as logged in the GC flow debug tool, is:

{
 "short_description": "Customer inquiry regarding billing discrepancy",
 "u_customer_email": "[email protected]",
 "u_gc_conversation_id": "conv-12345"
}

The ServiceNow instance is configured to accept basic authentication, and the credentials stored in the GC Credential Store are valid, as a simple GET request to /api/now/table/incident works correctly in a separate test flow.

Question:

Is there a known issue with how Genesys Cloud Data Actions serialize JSON payloads when sending to external REST APIs, particularly regarding field name casing or hidden characters? The ServiceNow logs indicate the field short_description is indeed missing, even though the GC debug log shows it is present. Could the issue be related to the content-type header not being set to application/json explicitly in the Data Action configuration, causing ServiceNow to parse the body as form-urlencoded data? I have verified the endpoint URL and authentication multiple times. Any insights into debugging the actual payload transmitted over the wire would be appreciated.

2 
resource "genesyscloud_flow" "incident_flow" {
 # ...
 data_action {
 # ...
 http_method = "POST"
 content_type = "application/json"
 }
}

Check content_type. ServiceNow often rejects text/plain. Also, verify the Authorization header uses Bearer token, not Basic. If still 400, enable debug logging in the flow to inspect the exact payload sent.

3

You need to verify the payload structure against ServiceNow’s strict schema requirements, as minor field mismatches trigger 400 errors. Ensure the JSON keys exactly match the target table definition.