Datacollector started task failed with this message:
DBG39020E DBGI 13:52:59 NXCMSROM MODULE MISMATCH WITH DPSCAI49 UNDER COMMON PCSSID
Release : 20.0
Component : CA Detector for DB2 for z/OS
Problem was caused by using one PC owner for two datacollectors running at different releases(R19 and R20). After separating the PC Owner by release with a different PCSSID. In the process of creating two separate PC Owner, IDUIPRMS, IDDCPRMS, APPLS need to be updated with the matching PCSSID.