If UNIVERSAL exists, it must exist as a FILE/RECORD pair.
Since the situation may have been overlooked during the upgrade to Datacom/DB 14.0, this needs to be addressed first. Refer to this knowledge document KB000040589 and run the same reports against this MUF to determine if UNIVERSAL entity as a FILE/RECORD pair is defined in to the DATA-DICT:
KB000040589 "CA Datacom 14.0 upgrade job BDUPG07 STEP9E DDPFI30001 FILE NAME NOT CODED"
Once UNIVERSAL FILE/RECORD pair exists, continue to delete the UNIVERSAL DATABASE and AREA.
Datacom/DB 15.0 upgrades require 15.0 PTF RO95060 and its SMP/e ++HOLD action.
Datacom/DB 15.1 upgrades require 15.1 PTFs RO95097 and RO98231 and its SMP/e ++HOLD action.
Note, as per the ++HOLD ACTION, after solution has been applied, run a DDUPDATE with the following to delete the UNIVERSAL database and area. Note that no version should be specified: