Ah, this is a known issue…
The Data Action expects interaction attributes to follow a specific schema. You cannot map directly to arbitrary keys. Use the attributes object in the payload, ensuring ke…
Make sure you verify the exact attribute path in your Genesys Cloud instance before finalizing the Data Action mapping. The 400 error often stems from attempting to write to a reserved or non-existent key within the attributes object. Check the interaction schema documentation to confirm the target field exists and is writable via the API. Using a generic string key without prior validation will cause the backend to reject the payload immediately.
It helps to inspect the raw JSON response from the Data Action node for specific field validation errors. Sometimes the issue is not the key name but the data type mismatch, such as sending an integer where a string is expected. Review the carrier failover logs if this interaction involves BYOC trunks, as some regional endpoints have stricter payload size limits. Adjust the mapping to use standard extension attributes if custom keys continue to fail.