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Multiple R/3 linked to single CRM

Hello Friends,

CRM provides functionality to link to multiple R/3 through middleware. Consider we have two stand alone R/3 systems (R/3-1 & R/3-2). A master data (Customer or Product) exists in both R/3-1 and R/3-2 with the same number.

E.g. Customer 20000 in both R/3

Now I first replicate R/3-1 BP to CRM creting BP 20000 in CRM.

When I replicate R/3-2 to CRM what will happen?

Later on if proper middleware settings are made when I change the BP 20000 in CRM what would get replicated back to R/3 and more impertantly which R/3, R/3-1 or R/3-2?

Suppose I want to maintain a 3 system landscape (CRM, R/3-1 & R/3-2), what needs to be done to enable the functionality (BP in CRM in sync with customers in both the R/3s, ie I make a change in BP in CRM and it will get replicated in both the R/3s)?



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