Before you try to convert your existing JCL decks to SCLM language definitions, you must obtain and review "expanded" listings of the JCL. The "expanded JCL" listings allow you to determine the actual values of the symbolic parameters in the JCL; these values include data set names, options, and other information that is required for successful translation to an SCLM language definition. You will also need to know the order in which programs are executed in the JCL, and the condition codes that are expected from each program. Your system administrator should be able to help you locate this information.