Creating External Services for Internet Application Components 
Use
You create an External Service for a SAP Internet Application Component (IAC) based on a master iView. For IACs, however, you need not know which master iView is concerned because the master iView is automatically selected.
Procedure
To create an External Service of type SAP IAC:
The External Service is generated based on the master iView.
You now see the finished External Service and can see which properties it has. If necessary, you can overwrite certain properties of the master iView.
Result
You created an External Service for a SAP IAC that you can insert directly in a role. Read also
Changing External Services in the Role.