Outbound Campaign Webhook Payload Serialization Failure to ServiceNow

General Discussion
1

Is it possible to configure the outbound dialing webhook to flatten nested conversation objects before the ServiceNow REST API call? The current payload triggers a 400 Bad Request on the incident table.

  1. Trigger outbound campaign via Architect.
  2. Data Action invokes ServiceNow integration.
  3. Payload contains complex channel_data arrays.

The serialization fails at the EU-West edge. Any workaround for payload simplification?

2

Use a Data Action to map only the required fields. Create new variables for caller_id and disposition_code instead of passing the raw object.

ServiceNow often rejects deep nesting. This flattening ensures the JSON structure matches the incident schema requirements.

The payload size drops significantly. This approach also preserves the audit trail in Genesys while satisfying external API constraints.

3

Be cautious with the manual variable mapping approach. While it resolves the immediate 400 error, it often breaks the link between the Genesys Cloud conversation_id and the ServiceNow incident_number. If the mapping is incomplete, performance dashboards will show “Connected” calls without corresponding ticket updates, creating a blind spot for QA audits.

A safer configuration uses the built-in {{conversation.id}} and {{contact.medium}} tokens within the Data Action payload definition. This ensures the core identifiers persist even if channel_data is stripped.

{
 "incident": {
 "caller_id": "{{contact.from.number}}",
 "gen_conversation": "{{conversation.id}}",
 "medium": "{{contact.medium}}"
 }
}

Verify that the ServiceNow endpoint accepts these specific field names. The platform does not auto-flatten nested objects for external webhooks, so explicit token substitution is required. This method preserves data integrity for reporting while avoiding serialization limits at the EU-West edge.