There is current no easy way to tell that all required maintenance is applied and that all necessary hold actions for MODS, PANELS and OSCNTL have been completed insync with the SMPE code changes.
Even when level S1507 is installed the product still show 1212 on the ST display
N11414 SYSTEM CONFIGURED WITH SNAAUTO (LMP=XY) - R12.1 LEVEL 1212
N11414 SYSTEM CONFIGURED WITH TCPIP (LMP=Y7) - R12.1 LEVEL 1212
or the /LEVELS display!