Is LU16054 independent of any other code changes? Is it ok if you apply this fix with other maintenance, but not run the "CADBJCL0(DB13XAC) to Relink DSNX@XAC for Top Secret" job until a later date?
Yes. LU16054 is independent of any other code changes. The fix only hits the Broadcom version of the DSNX@XAC exit so it can be applied with other maintenance and activated later.