Firstly you have your file declared as input with add – the compiler will expect you to do some sort of input operation on the file, unless you declare the file as output.
Your file name is SASAM, you have renamed the record format name from SASAM to SA100.
It looks like your D-specs are commented out (with the *s).
You move HDR to SASAM (which is the file name, not a field name).
I think your biggest problem is the confusion between the file name and the field name.