Locks missing from "DFH" CSD groups

As discussed in ETR Record 18196,999,616.

There are six CICS supplied DFH-prefixed groups in CICS TS 320 for which there is no lock record:
DFH$SOT DFHCBTS DFHDCTG DFHIPECI DFHRP DFHRPCF

There are four CICS supplied DFH-prefixed groups in CICS TS 410 for which there is no lock record:
DFH$SOT DFHCBTS DFHDCTG DFHRPCF

The existence of a lock record is identified when the group is listed by DFHCSDUP; "(IBM PROTECTED)" is shown after the group name.

Without the lock record it is possible to add, modify and even delete these CICS supplied DFH-prefixed groups. These groups should have lock records to protect them like the other CICS supplied DFH-prefixed groups.

I note that in the Resource Definition Guide it states that for DFHCBTS and DFHDCTG, "Note: This group is not protected by a lock. The definitions it contains can be modified if required." However, no such statement exists for the other groups. Either the groups should be locked or the documentation should indicate that they are intentionally not locked.

I would argue perhaps that all DFH groups should be locked, but that is another story.

The response in the ETR was "we agree that the issue of not locking these groups needs to be looked at, possibly as a requirement in the next release." As requested in the ETR, I have raised the requirement in this RFE.