Which ACB masking field in CA TPX takes precedence: user maintenance ACB mask default or ACT Mask entry name?
Virtual terminal masking can be defined for users and/or sessions in several places:
(a) ACT (Application Characteristics Table): Mask entry name
(b) Profile session options: ACB Mask
2) User Options (Profile and/or User level)
(a) ACB mask default
IMPORTANT: You must ensure that the specified virtual terminal has a corresponding definition within the type required for the application. For example, an ACT entry which specifies Type GRP will search for ACBs within the VTAMLST section for GROUP.
The Session mask takes precedence over the User Option mask. (Profile session options will override the ACT, as usual.)
When you define the mask within Profile Maintenance User Options (or User Maintenance for a specific userid) with the "ACB mask default" field, the mask will be used for all sessions that do not have a virtual terminal masking table entry defined within the ACT field "Mask entry name".
If you need to have a specific user's mask take effect for all sessions, then that will need to be incorporated into the masking table entry details.
If application A78TSO did not have a Mask entry name defined within the ACT, the userid's ACB mask default will take effect.
If the application does have a Mask entry name defined within the ACT, you have to update that table entry to accommodate the new set of ACBs.
Userid A06216P has ACB mask default = -A0B0C36
IMS ACT specifies Mask Entry name IMST.
Virtual Terminal masking rules in table SYSAPROD (or the defined table) for entry IMST need to have the first rule in that entry as physical #A0B0C-- to virtual -*******
Any new userids will need their User Maintenance set up with an ACB default mask specific to their userid.