Problem:
Can a 64-bit program call a 32-bit program or vice versa?
Resolution:
It is not possible for 64-bit to call 32-bit or vice versa.
The documentations also state:
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The Compiler directive P64 enables you to create a program that can be run on Micro Focus Server in 64-bit mode. If you do not use the P64 directive when you compile your program, the program can only be run on Micro Focus Server in 32-bit mode. Therefore, if you have developed an application on a 32-bit development system, you must recompile it with the P64 directive set, if you want to migrate it using Micro Focus Server in 64-bit mode.
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And
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You cannot port executable code between 32-bit and 64-bit development systems.
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