EventCrtOffCode doesn't get set when calling CRMEventAdd

Question

When creating a CustCon event using CRMEventAdd, I'm assigning the CRMEventInfoRec.EventCrtOffCode to a valid officer but the contact event Created By user does not get set to the value I'm sending in the request.
The Created By value shows the jXchange user.
The same is true when setting the same property in CRMEventMod.

How can I change the Created By user in my CRMEventAdd request?
Does EventCrtOffCode do something besides set the Created By officer?

request.CustId = new SynapsysCustomer.CustId_Type() { Value = custId };
request.CRMEventType = new SynapsysCustomer.CRMEventType_Type() { Value = "CustCon" };
request.CRMEventInfoRec = new SynapsysCustomer.CRMEventInfoRec_CType();
request.CRMEventInfoRec.CRMEventDt = new SynapsysCustomer.CRMEventDt_Type() { Value = DateTime.Today };
request.CRMEventInfoRec.EventCatCode = new SynapsysCustomer.EventCatCode_Type() { Value = "313" };
request.CRMEventInfoRec.EventStatCode = new SynapsysCustomer.EventStatCode_Type() { Value = "28" };
request.CRMEventInfoRec.RmndSchedEnable = new SynapsysCustomer.RmndSchedEnable_Type() { Value = "true" };
request.CRMEventInfoRec.EventOffCode = new SynapsysCustomer.CRMOffCode_Type() { Value = "OFFCODE" };
request.CRMEventInfoRec.EventCrtOffCode = new SynapsysCustomer.CRMOffCode_Type() { Value = "OFFCODE" };

response = await client.CRMEventAddAsync(request);

The contact event gets created with the Assigned To set to OFFCODE but the Created By shows as the jXchange user, not OFFCODE.

Answer 1

We reached out to the our Synapsys support team with your question. Here is their response:

The EventCrtOffCode element is part of the Event suite of services, but is only supported on the CRMEventInq service to return the officer who created the event.

When an event is created via CRMEventAdd, EventCrtOffCode is ignored and the officer derived from the header is used since that is who sent the request.