02-07-2019
Hi Rakesh,
You say that the letter M at the end of each input line is special and has to be removed. The letter M can't be removed if you say it is not special. We can't possibly meet your requirements if your requirements are inconsistent.
If you want to change your requirements to only remove sequences of characters that are not a space character and that are not alphanumeric characters from the end of each input line, the output produced from your sample input will be identical to the input because the last character is an alphanumeric character!
You had several suggestions earlier that, among many other things, removed all non-alphanumeric characters from the end of field 15 or from the end of the input record and you rejected all of them because they didn't get rid of trailing M.
I give up!
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