Is this solution needed for both CA Datacom/AD and CA Datacom/DB?
SO00519 (DB 14.0 #607[OS]), "RESOURCES HELD IN MUF AFTER USER JOB SUBTASK ABENDS" (Published 02 Mar 2018) was created predominantly for CA 7 users with CA Datacom/AD, and this corrects a problem that is very rare in the CA 7 environment. While it is possible in the CA Datacom/DB environment, too, it is even rarer there.
Consequently, if you have CA 7 with CA Datacom/AD, we would recommend you apply this as soon as you can. For all other situations, you can apply this as you desire - either with special hyper maintenance procedures or with your normal maintenance.
As always, please contact CA Technologies support for CA Datacom if you have further questions.