Changed internal CICS control blocks

Note that this description only applies to users migrating from a system older than CICS TS for z/VSE 2.1 (z/VSE 6.1). Users upgrading from CICS TS for z/VSE 2.1 are not affected.

With CICS TS for z/VSE 2.1, internal CICS® control blocks were changed. The changes are not transparent. Programs using these control blocks have to be recompiled and re-linked prior to execute them on CICS TS for z/VSE 2.1 or CICS TS for z/VSE 2.2.

The Table 1 lists the major control blocks that were changed. Some changes are transparent depending on the usage. This is listed in additional information. Programs, that use internal CICS control blocks which are not listed, should also be recompiled.