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This requirement has been evaluated and on the basis of current plans and market interest, it is not likely that this would be implemented in future zOS Connect EE releases, so correspondingly this requirement is being rejected. You have an opportunity to resubmit in twelve months time if you wish it to be considered then.
While z/OS Connect does support alignment of data structure fields on half, full, and double-word boundaries, it does not support PL/I techniques that save space within an ALIGNED structure by omitting padding (e.g., last record is shorter than first).
To expose PL/I programs with ALIGNED structures as services, a wrapper program with UNALIGNED versions of the structures could be exposed instead. For the request, the wrapper program would assign an UNALIGNED version of the request structure to an ALIGNED version and link to the original program. For the response, the wrapper program would assign the ALIGNED version of the response structure to the UNALIGNED version. The following example shows how a wrapper program can efficiently map between ALIGNED and UNALIGNED versions of structures:
PGM1WRAP: PROC;
DCL 01 PGM1_REQUEST ALIGNED,
02 ...;
DCL 01 PGM1_RESPONSE ALIGNED,
02 ...;
DCL 1 ZCEE_REQUEST LIKE PGM1_REQUEST UNALIGNED;
DCL 1 ZCEE_RESPONSE LIKE PGM1_RESPONSE UNALIGNED;
/* Get ZCEE_REQUEST from IMS message queue or CICS container */
PGM1_REQUEST = ZCEE_REQUEST; /* unaligned to aligned */
CALL PGM1(PGM1_REQUEST, PGM1_RESPONSE); /* pass aligned */
ZCEE_RESPONSE = PGM1_RESPONSE; /* aligned to unaligned */
/* Put ZCEE_RESPONSE to IMS message queue or CICS container */
RETURN;
END PGM1WRAP;