How does LIST UID( ) differentiate between blank and null? There is a different list of logonids for LIST UID() than for LIST UID( ).
Release : 16.0
Component : CA ACF2 for z/OS
The LIST UID( is looking to match the first character with the UID string, and all other characters are masked. LIST UID() is the same as LIST UID(*), so all logonids will be returned. While LIST UID( ) will only return a logonid if the first character in the UID string contains a space, or x'40' in EBCDIC.