NOCMPR2
In NOCMPR2 programs, 85 COBOL Standard requires that fixed-file attribute checking be done in many cases. As a result, a program with inconsistent fixed file attributes might fail at OPEN time rather than have problems later. The OPEN could fail with either runtime message IGZ0035S or file status 39 (if a file status clause is specified). See Preventing file status 39 for QSAM files for more information about preventing file status 39 for QSAM files.
A common source of fixed file attribute inconsistency problems is the DCB= parameter of the JCL DD statement for your file.