End Point for the RFC Adapter 
This end point is required by the outbound RFC adapter to call a function module in a receiver system. For more information about the RFC adapter, see RFC Adapter.
The following parameters must be specified in the end point for the RFC adapter. Select a radio button to activate or deactivate load balancing. You must specify different information depending on whether you activate or deactivate load balancing. This also determines which fields require entries to be made or can be changed.
Load Balancing Deactivated
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Application Server |
Host name of the application server |
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System Number |
SAP system number on this application server |
Load Balancing Activated
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Message Server |
Host name of the message server |
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Message Server Service |
OS service of the message server or the message server port |
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System ID |
ID of the SAP system |
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Logon Group |
Logon group for the dynamic logon load for RFC calls |
If you are using an end point of this type you must use logon data for the receiver business system. If this logon data is only to be used for this end point type, it must be specified in the namespace urn:sap-com:document:sap:rfc:functions. Generally, you can enter a placeholder (*) for the receiver interface when defining logon data so that the logon data concerned does not only apply for this end point type (see Default Procedure and Example).

You can only create end points for the RFC adapter for SAP systems acting as receiver systems.
See: Example of an End Point (RFC Adapter).