Support for the CustomRecord and the RuntimeProperties interfaces is provided in mfejblib.jar for EJBs and in mfj2se.jar for J2SE Java beans.
For J2SE Java beans, you need to make sure that the mfj2se.jar is available to the Java run-time system and is on the Java classpath.
For EJBs, this support is automatically included in the application .ear file when you generate a client for the EJB. If you create a client manually, you need to add the mfejblib.jar to your .ear file, manually. Specific versions of this file are supplied for each supported application server and J2EE version.