For a given response payload from a REST or SOAP step it is possible that it can exceed the default payload size.
The execution context would contain an error like the following:
..failed with error: com.snc.process_flow.exception.OpException: Response size exceeds limit
By default, the allowed payload size for a REST or SOAP response is 5MB
To address that error message, add the respective properties to the sys_properties table for the given step being used.
Note: If the respective flow is configured to use a MID Server, you would add the respective property to the MID Server properties table and not 'sys_properties'.
The maximum value that can be specified is: 10240