ServiceNow Data Action returns 401 during GC Architect Flow execution

NICE CXone API & Integrations
1

Does anyone know the exact authentication header requirements when triggering a ServiceNow Data Action from within a Genesys Cloud Architect flow?

The integration is failing with an HTTP 401 Unauthorized error. The webhook payload includes the basic auth header encoded in base64, which works perfectly when tested via Postman or curl from the London office. However, when the Architect flow executes the Data Action, the response indicates a credential mismatch. The ServiceNow instance is configured with SSO, but the Data Action is set to use basic authentication for this specific integration user. The GC environment is in the eu-west-1 region. The error log in ServiceNow shows the request is coming from the Genesys Cloud gateway IP, but the auth token is rejected. Is there a specific header format or encoding issue that Genesys Cloud applies when passing credentials to external REST APIs? The Data Action version is 2.1. Need to resolve this before the next sprint. Cross-referencing the Genesys Cloud integration docs shows basic auth is supported, but the implementation details are sparse. Any insights on the correct header structure would be appreciated.

2

Make sure you verify the exact header structure in your JMeter thread group before assuming the Architect Data Action is stripping credentials. The 401 error often stems from the platform injecting its own internal headers or modifying the Authorization field during high-concurrency execution, which breaks the base64 encoding expected by ServiceNow. Try isolating the request to check if the payload size or header configuration changes under load.

{
 "method": "POST",
 "url": "https://your-instance.service-now.com/api/now/table/incident",
 "headers": {
 "Authorization": "Basic <base64_encoded_credentials>",
 "Content-Type": "application/json"
 },
 "body": {
 "short_description": "Test Incident from GC"
 }
}

Check the raw HTTP trace in the Architect flow logs to confirm the header arrives intact at the ServiceNow endpoint.

3

Take a look at at the base64 encoding context.

  • Architect Data Actions often strip special characters from headers.
  • Use genesyscloud CLI to test the exact payload structure.
  • Check if ServiceNow requires application/json content-type explicitly.
  • Verify the credential scope in Terraform state matches the runtime environment.
4

You might want to check at how Genesys Cloud handles header injection compared to Zendesk’s static macro fields. The platform often modifies the Authorization header structure.

  • Use a Set Variable step to store the base64 string.
  • Reference that variable in the Data Action header to avoid direct encoding issues.
  • Verify the Content-Type is strictly application/json.