Which value should be chosen for the field Program ID for RFC sender channels?
A RfcAdapter sender channel registers itself with this Program ID as a RFC-Server at the SAP Gateway. The sending system uses the same Program ID to identify the RFC-Server at the SAP Gateway. If the sending system is a SAP system, this Program ID has to be maintained in the RFC destination (transaction SM59).During the sending system sends some RFC calls, the SAP Gateway will search its registration list for the Program ID supplied by the sending system. If there are more than one RFC-Server registered with the same Program ID, it will automaticaly schedule the RFC calles to each of the RFC-Servers using the round robin approach. This is done to distribute the load over all RFC-Servers equally.To identify a XI RfcAdapter sender channel within the SAP Gateway it is important that its Program ID is unique within this Gateway. So try to avoid using common phrases as Program ID like ‘rfcadapter’ or ‘rfcToXmb’.To check which Program IDs are registered at the SAP Gateway the gateway-monitor