An exit module for the EDG_EXIT200 installation exit has returned an unsupported return or reason code. DFSMSrmm issues the relevant EDG0313I message for the first occurrence and writes a PDA trace entry for each occurrence. See message EDG0313I that is written to the MESSAGE file and to the system log. If you need to refer to all the errors, use ARCPRPDO to format the PDA trace entries created by module EDGCMIX during EXPROC processing. The PDA trace entry gives details of the exit name, exit module name and the values returned. Ensure that the exit module returns only supported return codes as defined in the z/OS DFSMSrmm Implementation and Customization Guide.