Integration of SAP Sourcing and SAP ERP 
By integrating SAP Sourcing with SAP ERP, you can do the following:
Send a request for quotation (RFQ) from SAP ERP to create a request for proposal (RFP) in SAP Sourcing.
Send an RFP award from SAP Sourcing to create an outline agreement in SAP ERP.
Send an RFP award from SAP Sourcing to create a purchase order in SAP ERP.
Send a master agreement/subagreement from SAP Sourcing to create an outline agreement in SAP ERP.
The process can begin in the following ways:
In SAP ERP with a requisition or set of requisitions that are converted to an RFQ in SAP ERP and then sent to SAP Sourcing to be sourced.
Directly in SAP Sourcing, without being initiated by a requisition and RFQ in SAP ERP.
In addition, you can update specific fields in an outline agreement in SAP ERP based on updates to specific fields in a master agreement or subagreement in SAP Sourcing.
Integration
The integration between SAP ERP Financials and SAP Sourcing is shown in the following figure.
Integration of SAP ERP Financials and SAP Sourcing
The integration between SAP ERP Financials, SAP ERP Materials Management, and SAP Sourcing is shown in the following figure.
Integration Between SAP ERP Financials, SAP ERP Materials Management, and SAP Sourcing
Prerequisites
You have integrated SAP Sourcing with one or more SAP ERP systems. For information about how to do this, see the configuration guide on SAP Service Marketplace at http://service.sap.com/eso. The configuration guide includes information about the supported systems and releases.
Features
You can publish suppliers from SAP Sourcing to one or more SAP ERP systems, and vice versa. For more information, see Publishing Suppliers from SAP Sourcing to SAP ERP.
You can integrate business documents between SAP Sourcing and a single SAP ERP system. The necessary information is provided to enable you to easily find related business documents in either system. Related business documents include requisitions, RFQs, purchase orders, and outline agreements in SAP ERP, and RFPs and master agreements/subagreements in SAP Sourcing.