The Adapter queries the SAP system for metadata for RFCs, and spews out a wsdl. The parameters for the RFC (as exposed in the wsdl) will appear in the following order - they will first be sorted into 4 groups, "Changing, Export, Import, Tables" (C, E, I, T) and then within each group, they will be sorted alphabetically.

Therefore, identical RFCs (i.e. RFCs with the same name and same parameter names and parameter directions) across different SAP systems will appear identical when exposed through the metadata.