6. The following statements are true for the Extended Classic Implementation scenario:
a) The leading document is created in SRM and a copy of the document is transferred to back-end SAP system.
b) The follow-on documents of confirmation and invoice can only be entered in the SAP back-end system.
c) The purchase order can be changed in SAP R/3.
d) The SAP Portal is not compatible with the Extended Classic Implementation scenario of SRM.
In the current SRM 5.0 release, SAP provides three implementation scenarios for use: the Classic, Extended Classic, and the Standalone. In the Extended Classic scenario, the entire procurement process takes place locally in EBP and a copy of the data is replicated to the back-end system. In essence, this scenario is an extension of the Classic Scenario.
The purchase order in the back-end SAP system is a read-only copy that enables goods receipt, service entry, and invoice verification in the back-end system. The back-end purchase order cannot be changed. If you wish to make any changes to the purchase order, you must do so in EBP. Once you save these changes, they are transferred to the back-end purchase order.