For each OnBase system with a Facility ID assigned, map the $$EPICFACDOCNUMBER default value to the HL7 template field where Epic expects the document ID.
The $$EPICFACDOCNUMBER default value allows HL7 to send the document ID in the format <Facility ID>.<itemnum> , where <Facility ID> is the Facility ID configured for the current OnBase system and <itemnum> is the document handle.