| Classic | Extended classic option |
| In a classing deployment model, you process the shopping cart in SAP SRM and supporting documents are processed in backend ERP system. | In extended classic deployment model, procurement process takes place in SAP SRM system and PO is generated in SRM system and a read only copy is created in back end ERP system. |
| You can perform goods receipt or invoices in any of the system. | You can perform goods receipt or invoices in any of the system as in case of classic scenario. |
