i sumbitted this job and compared the DD001 file with the original file , but they are same .
I still have no idea what might have become different. . .
as i assumed it will delete the allocated file but if it exist then what is the difference between the original and current file !
How might there be an "original" and a "current" file? It is only one step with only one dd statement for a dataset?
It sounds like there is some very basic information about file processing that is completely misunderstood. . .