Question { CTS, 3751 }

Can We have Classic and Extended Classic Scenario in the Same System . If we can have it , then How do we Configure

Answer

one example would be an organization that wants to use the extended classic scenario but also has a business requirement to create a reservation in SAP MM from a shopping cart. Such a business requirement can only be satisfied if both the Classic and Extended Classic scenarios are combined. As EC does not have reservation facility

This is called a Decoupled scenario but not much in picture.

Depending on the product category system will take the decision to go for classic or Extended classic

BADI used is BBP_DETERMINE_LOGSYS.
Here you identify backend system and enter the information the system needs in order to choose the correct scenario