Context:
I cannot figure out why my Architect flow fails when mapping Zendesk ticket fields to Genesys Cloud interactions. The POST to /api/v2/integrations/zendesk/tickets returns a 400 Bad Request with field_mapping_invalid. My flow uses a Data Lookup to pull the ticket ID, but the API rejects the payload structure.
Question:
Does the Zendesk integration API require a specific JSON schema for interaction mapping that differs from the standard ticket update payload? I am migrating from Zendesk macros and expecting a smoother field translation.
Check your payload structure against the v2 integration schema. The field_mapping_invalid error usually indicates that the interaction object is missing required media type flags or that the Zendesk ticket ID is not properly formatted as a string within the nested metadata object.
When syncing from Zendesk, the API expects a specific JSON structure that links the external ticket ID to the internal Genesys interaction ID. A common mistake is sending the ticket ID at the root level instead of within the externalInteraction wrapper.
Here is a minimal valid payload example for the POST request:
{
"externalInteraction": {
"externalInteractionId": "ZD_TICKET_12345",
"externalInteractionType": "zendesk_ticket"
},
"interaction": {
"mediaType": "digital",
"initialContact": {
"timestamp": "2023-10-27T10:00:00.000Z"
}
},
"metadata": {
"zendesk_ticket_id": "12345",
"subject": "Customer Inquiry",
"priority": "high"
}
}
Ensure the mediaType matches the digital channel configuration. If you are pulling data via a Data Lookup in Architect, verify that the lookup result returns a clean string for the ticket ID, not an object or null value. The integration endpoint is strict about schema validation.
Also, be aware that bulk sync operations can trigger rate limits if not handled with exponential backoff. For legal discovery purposes, always maintain an audit trail of these sync events. See the official documentation for detailed schema requirements: https://developer.genesys.cloud/apidocs/integrations/zendesk
If the issue persists, enable debug logging in Architect to capture the exact request payload being sent. This helps identify any hidden characters or formatting issues in the ticket ID field.
This is typically caused by the strict schema validation on the /api/v2/integrations/zendesk/tickets endpoint, which enforces specific nested object structures for interaction metadata. The field_mapping_invalid error typically surfaces when the external_ticket_id is passed as a raw integer or when the required media_type property is omitted from the interaction payload. The Genesys Cloud Zendesk integration expects a very specific JSON hierarchy to correctly map the external Zendesk ticket to the internal Genesys interaction.
Ensure your Data Action or REST API call constructs the payload exactly as shown below. Note that the ticket_id must be a string, and the interaction object requires the media_type field to be explicitly defined. Also, verify that the user_id corresponds to a valid Genesys Cloud user ID, not a Zendesk user ID.
{
"ticket_id": "12345",
"interaction": {
"media_type": "voice",
"user_id": "gen-user-uuid-here",
"start_time": "2023-10-27T10:00:00Z"
},
"metadata": {
"zendesk_ticket_url": "https://subdomain.zendesk.com/agent/tickets/12345"
}
}
If you are using a Data Action within Architect, double-check that the JSON serialization step does not inadvertently convert the string ticket ID to a number. I have seen this happen frequently when mapping from a Data Lookup result that returns a numeric type. Cast the lookup result to a string before inserting it into the JSON template. Additionally, ensure that the Zendesk integration is fully provisioned in the Genesys Cloud admin console and that the webhook URL is correctly registered. The documentation for the Zendesk integration API is quite sparse on error codes, so validating the payload against the v2 schema is the most reliable troubleshooting step. If the issue persists, enable debug logging on the integration endpoint to capture the exact rejection reason from the Genesys Cloud backend.
To fix this easily, this is to ensure the external_ticket_id is explicitly cast to a string in the Architect Set Variable action before the API call.
The validation fails because it expects a string, but JMeter or the flow often defaults to integer if the source data lacks quotes.