Asked by Anonymous - Mainframe File Status Error Code 96 : This mainframe error status 96 in cobol is usually the same error scenario every time it occurs. This is the result of your program having a mainframe file name listed that does not exist. This means that your cobol program shows a message saying something similiar to "ERROR OPENING - OUTPUT FILE STATUS 96 CEE3110C The system or user abend U4000 R=NULL was issued. From compile unit COBCOBA at entry point COBCOBA at compile u at address 31145251E.".   You most likely have a file naming problem in your mainframe program, so start by looking at the naming convention you are using.

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