The job defined in the UPDTMSGS member in
your.prefix.CNTL is required to update your xxxxMSGS messages tables. This job updates and also compares your xxxxMSGS table with the TBOLMSGS table that was delivered in an earlier release. It ensures that any customizations that may have been made are reflected in the xxxxMSGS tables for the current version.
This job must be run once for each xxxxMSGS table including TBOLMSGS, where xxxx is usually the application name, but can be any four characters.
As part of the job, the program TBCOMP compares your versions of the xxxxMSGS tables with the originally released TBOLMSGS. It may return a condition code — see Table 1.