StrucId (MQCHAR4) for MQMDE

This is the structure identifier of the message descriptor extension structure. It is always an input field. Its value is MQMDE_STRUC_ID.

The value must be:

MQMDE_STRUC_ID: Identifier for the message descriptor extension structure.
For the C programming language, the constant MQMDE_STRUC_ID_ARRAY is also defined. This has the same value as MQMDE_STRUC_ID, but is an array of characters instead of a string.