Hey guys, we are building a new AppFoundry integration that pulls external CRM customer profiles into the Genesys Cloud agent UI using a Data Action. Some of these CRM profiles are massive and include the entire purchase history and a bunch of custom JSON arrays. The Data Action fails constantly during testing with a ‘Response payload size exceeded’ error. I think it is hitting a hard limit of a few megabytes. Does anyone know how to bypass the payload size limit for Data Actions, or do we have to filter the JSON down before it hits the platform?
Hey! Yeah, I actually opened an issue about this on the Genesys Cloud GitHub repository a few months ago while working on the Python SDK. You cannot bypass that limit. The Data Action engine enforces a strict maximum response payload size of three megabytes.
If your external CRM returns a JSON payload that is even one byte larger than that, the platform instantly terminates the execution and throws the error. You absolutely must use the ‘Translation Map’ feature to filter down the JSON, but honestly, it is way safer to implement pagination or filtering on your external CRM endpoint directly.
I completely agree with the architectural assessment provided above. When designing enterprise data extraction layers, relying on a real-time Data Action to process multi-megabyte payloads is a fundamental anti-pattern. Data Actions are intended for rapid, synchronous lookups of specific key-value pairs, not bulk data transfer.
To resolve this, you must modify your external CRM API query parameters to return only the immediate data required for routing, such as the customer tier or account status. The agent desktop integration iframe can then perform a secondary, direct API call to the CRM to render the comprehensive purchase history.