On February 23 I posted a blog entry , where I described CICS/VSE support on z/VSE 4.3.
Just to recall: The last release, where you had a full CICS/VSE environment, was z/VSE 4.2. CICS/VSE can not run on z/VSE 5.1. CICS/VSE support ended October 31, 2012. That is the only supported CICS on z/VSE is CICS Transaction Server for VSE/ESA.
z/VSE 4.3 dropped the compatibility environment and replaced DL/I DOS/VS 1.10 and DL/I VSE 1.11 by a new DL/I release - DL/I VSE 1.12. DL/I VSE 1.12 only supports CICS TS. However, CICS/VSE can... [More]