Use this library routine (in place of MFU_ASSERT_FAIL_Z) when your test case uses a mainframe dialect. Mainframe dialects such as ENTCOBOL restrict the names of program-ids and entry points to 8 characters or less, hence the shorter routine name.
The unit testing library routines use the mfunit_prototype.cpy copybook for call prototyping. If required, it is available from the cpylib directory of your product installation directory.