Use Error Stack (-errorstack) to allow error objects to save the ABL call stack in the CallStack property of an error object at the time the AVM generates the error object.

When -errorstack is specified, the ERROR-STACK-TRACE attribute of the SESSION handle is set to TRUE. The default value for this attribute is FALSE. However, if getting the call stack is important for troubleshooting your application, you should not hesitate to use it.