Dave,
I opt for option b - no point having a field that is not used - only leads to mistakes.
Horst

David Peterson wrote:

So, since RES is now obsolete I would propose:

a. Exchange originating S_ID field value shall match the S_ID field value in the FC Header, or

b. obsolete the Exchange originating S_ID field in the REC payload (and the associated address fields in the Reply too).

...Dave

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