While implementing SAP CRM in a company, how do we transfer data from R/3 system to CRM system?

Answer 1

check the SAP help portal:

http://help.sap.com/saphelp_erp2005vp/helpdata/en/43/32c092d5b90d24e10000000a1553f7/frameset.htm

Integration of SAP Customer Relationship Management Locate the document in its SAP Library structure
Purpose

You can transfer billing documents that result from sales transactions in Customer Relationship Management (CRM) to Contract Accounts Receivable and Payable (FI-CA) in the ERP system.
Prerequisites

You have installed SAP CRM with Release 5.0 or a higher Release and an ERP system with Release 2005 or higher.
Process Flow

You can process different business transactions simultaneously with one and the same business partner that you reflect in different systems.

Example You process the product order of a business partner in SAP CRM or in SAP CD. You process the services that this business receives from your company (for example, telephone charges, power consumption, newspaper subscriptions, and insurance policies) in a further SAP system or a system of a different provider. Further open receivables (for example, from earlier billing and dunning notices) or credits (for example, interest credits or overpayments) can exist for this business partner in an SAP ERP system.

This makes it necessary to treat data that arises for a business partner in different source systems separately in subsequent processes (for example, issue of invoices, correspondence, and entry and monitoring of incoming and outgoing payments).

Invoicing in Contract Accounts Receivable and Payable achieves this separation by means of standard interfaces that you can use to transfer documents from different source systems to Contract Accounts Receivable and Payable to invoice them together there. In Invoicing in Contract Accounts Receivable and Payable, invoicing, correspondence, and entry and monitoring of incoming and outgoing payments are integrated. You can process billing documents from different SAP source systems and source systems from other solution providers. The integration of SAP CRM is a special case of the general integration scenario implemented in Invoicing in Contract Accounts Receivable and Payable, and here an SAP CRM system is the source system for billing documents.