ESCAPE MESSAGE IN AS400

Escape (*ESCAPE): If the problem is serious enough, the program should abend (abend is short for abnormal end). If your CL program abends, it must send an escape message to its caller (the program that called it, or you yourself, if you initiated the program manually). When the caller gets the escape message it will know for sure that there was something seriously wrong,


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http://www.mcpressonline.com/system-administration/general/as400-messages-part-i.html