Specific versions of this file are supplied for each supported application server and J2EE version. They are available in the following subdirectories under %ProgramFiles(x86)%\Micro Focus\Enterprise Developer\javaee\javaee7:
If you copy mfejblib.jar to a different directory, you need to change the classpath in the manifest.mf file in the EJB's .jar file, which is in \myservice\myservice.deploy.
For most application servers, you can do this using their administrative tools. Alternatively, you can use a jar command similar to the following:
jar -uvf myApplication .ear mfejblib.jar