Hi there.
I have a question when modifying and compiling an object in a library A and that object calls ( by fetch return, fetch callnat, perform) an object in a library B do I need to compile this object in library B.
If modifications in the calling module include changes to the parameter list of the called module, then you need to change and compile the called module. (OPTIONAL parameters are the exception.) If there are no changes to the parameter list of the called module, then there is no need to re-compile.