Resolution:

The following properties can be used to set the limit with regards to payload size/APIX-G logs. Note that the values are in bytes.

 tibco.clientVar.ASG/ForwardLargePayloadLimit=1000
 tibco.clientVar.ASG/ReverseLargePayloadLimit=1000

If the payload is larger than the limit then anywhere in the code where the payload is logged only the first xLargePayloadLimit characters are logged. If the payload is larger than the limit then it is not copied to the context document. Note that the payload will still be available as the nbRequest / sbRequest in mappers. If the above global variable(s) is/are not present in the properties file the default value is set to -1, which turns this behavior OFF.

Can TIBCO API Exchange Gateway(APIX-G) be configured not to log huge payloads?