Version (MQLONG)
This is the structure version number. The value must be:
- MQXP_VERSION_1
- Version number for exit parameter-block structure.
Note:
When a new version of this structure is introduced, the layout
of the existing part is not changed. The exit must therefore check that the
version number is equal to or greater than the lowest version that contains
the fields that the exit needs to use.
This is an input field to the exit.