when a tape on VMF has never used the following message: CATP020I SECURITY EXCEPTION - DATASET NOT AVAILABLE TO USER is received.
Release : 14.0
Component : CA TLMS Tape Management
This is caused because RACF/ TSS will not allow you access to a blank data set name and INQACC=YES. This is a security error because the TLMSIPO parameter INQACC=YES is set.
As a solution, it can either set the TLMSIPO parameter to INQACC=NO or update the TLMSUTAB giving the ACCESS=UPDATE for the user or update the DSN by CATINQR
UPD VVVVVV,DSN=INITIAL .