My shop we make use of integrated CICS translator which generates the declaration statements of DFHEIBLK and DFHCOMMAREA in linkage section. This is true for each program compiled with "CICS" option. But there are some programs in my shop which explicitly pass DFEIBLK to the called programs. So first of all is it really required to pass DFHEIBLK?
The application programing guide says you need not pass the DFEIBLK or DFHCOMMAREA when using the integrated CICS translator.