Trying to get into the Detector for Db2 for z/OS (PDT) history datastore and receiving the following messages on the console:
PXM2002 ERROR LOADING PDT200CC DATASTORE COMPATIBILITY RELEASE MODULE.
DT0720 DATASTORE REQUEST FAILED RPLREQ=X'00' RPLRTNCD=X'00' RPLERRCD=X' 00'
Problem was caused by use of an old library without the required PDT compatibility module.
Pointing to the correct library resolved the problem.