Where can be found the source of a return code?

Hi everyboy,

we deliver SAP GUI via Symantec (8.1) with a client job. Inside the job, which consists of several tasks, we deliver the SAP GUI Package with the configured command line "SapGUIDefault.exe /nodlg". Many of the delivery tasks end with the result code "0" (everything is fine), but some end with the code "129".

My questions are:

1. Is this result code thrown by Windows or thrown by SAP.exe?
2. Where can we find the source of thrown return code in SCMS, where is it written (logs, etc.)?

Many thanks for the support!

Best regards

Simon