On dual 32-bit/64-bit COBOL systems, all code must be compiled and linked using the same word length. A 64-bit run-time system does not run programs compiled and/or linked on 32-bit platforms or in 32-bit mode. Similarly, a 32-bit run-time system does not run programs compiled and/or linked on 64-bit platforms in 64-bit mode.
Resolution:
Recompile and/or relink your program so that it is compatible with the current run-time system.