Invoice Entry 
Use
As an internal employee (for example, with the role of purchaser, purchasing assistant, manager or accountant) or vendor or service provider, you can enter and process invoices in SAP Enterprise Buyer. If you enter or process invoices in the role of vendor or service provider, the invoices must be approved by a responsible internal employee.
You have the following options:
· Entering Invoices without PO Reference
· Entering Invoices with PO Reference
· Displaying and Processing Invoices
Under certain circumstances, you can also create Express Invoices. For more information, see Shopping Cart: Check Status.
Note that invoices are posted gross and discounts are applied when payment is made. You can repost the discounts to the underlying cost objects (for example, cost center) or to the account assignment objects that are not relevant to Controlling (for example, business area) using Report SAPF181. For more information, see the report documentation in the SAP R/3 System using transaction SE38.
Integration
In the case of invoices that you enter with reference to a PO, the system automatically proposes the data from the system in which the purchase order was originally entered (local purchase order or backend purchase order).
Prerequisites
The settings required for your Business Scenario have been made according to the Business Scenario Configuration Guide. For more information, see the Business Scenario Configuration Guide for this Business Scenario on the SAP Service Marketplace under http://service.sap.com/ibc ® ...for mySAP SRM.
When you are Maintaining User Attributes, you define which Financial Accounting (FI) component is used and in which company code your invoice is posted.
Any customer fields for account assignment that exist in the backend system have also been created in SAP Enterprise Buyer.