Using SAP PI instead of CRM Middleware

Hi experts,
Is it recommend to use SAP PI instead of SAP CRM Middleware.
If yes how can I do that.
I have read in forum requests that it can be implemented by using iDOC instead of BDocs.
I need a technical guideline how data (eg. Business Partner Data) can be tranferred from CRM to other ERP System.
Thank you for help.
Greetings
Mario
Edited by: Mario Bauer on Jun 22, 2010 9:24 AM
Edited by: Mario Bauer on Jun 22, 2010 9:28 AM

Hi!
SAP PI itself is a middleware Product but very roboust and capable enough to integrate any system to any other system, either it is SAP or Non-SAP. And there are two ways to integrate other ERP System to SAP CRM using SAP PI.
1. SAP PI will receive the message from back end ERP system & convert it to the XML format. SAP CRM receives the message using the Middleware XIF adaptor and convert the incoming XML Messages in the BDocs and the BDocs upload the data in the SAP-CRM Data base.
2. SAP PI will receive the message from back end ERP system & convert it to the XML format. SAP CRM receives the message and using the Functional Module convert the data into the  BDocs and the BDocs upload the data in the SAPCRM Data base. In thsi situation, you need an expert ABAP Consultant to write the accurate functional Module.
The data inside the SAP_CRM System always transported in the BDocs not in Idocs. It is the BDocs data containers which transport the data from CRM Middleware to CRM Database and CRM Database upto CRM Middleware.

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