Basic Settings for Processing ERS in SRM 
This section of the SAP Solution Manager structure contains the process documentation, web transactions, and configuration information for the business process Processing Evaluated Receipt Settlements (ERS) in SRM.
Note
Before you perform the configuration steps contained in this section,
ensure that you have already completed the basic settings for Service Procurement
and Plan-Driven Procurement. You can find these steps in SAP Solution Manager,
by choosing 
Configuration Structures
SAP SRM 7.0 Basic Settings
for Service Procurement/Plan-Driven Procurement 
.
End of the note.