ERR24 Unused DSNB xxxxxx is not in chain and chains thru DSNB yyyyyy
ERR45 TMSCTL#2 chains thru DSNB zzzzzz, nnnnnn DSNBs in chain
Using TMSUDSNB or the CA 1 ISPF panels you should rechain the unused DSNBs together by updating the NEXT field. The ERR45 indicated that the last DSNB in the chain was zzzzzz. You need to update DSNB zzzzzz to point to the first DSNB of an ERR24, in this case the one that starts with DSNB xxxxxx and chains thru yyyyyy. Then repeat this process until you add in the ERR24 that says it chains thru end of chain.
After your updates are done, please run TMSPTRS again to show that all errors have been resolved.
If you choose you can also start the CTS task and use the internal task call APEC. It does the same function as TMSPTRS but has the ability to make the updates to correct these errors for you.