Shopping Cart 
Using the shopping cart, company employees can procure the goods and services that they need for their work area. This takes the pressure off the purchasing department, who in turn can concentrate on strategic tasks, such as contractual negotiation.
This function is used in the business scenario Self-Service Procurement.
If shopping carts contain incomplete items (for example the supplier is not entered), purchasers receive a work item in their Universal Worklist (UWL) for completion.
To use shopping carts, you must have made the following settings in Customizing for SAP Supplier Relationship Management:
You have defined the organizational structure and the attributes of the organizational units in Customizing for SAP Supplier Relationship Management under .
You have defined the back-end system where you create purchase orders, purchase requisitions, and reservations. You do this in Customizing of SAP Supplier Relationship Management under and Define Back-End System for Product Category.
You have set up the catalogs in Customizing for SAP Supplier Relationship Management under .
You have specified which follow-on documents the back-end system or SAP SRM creates from the shopping cart in Customizing for SAP Supplier Relationship Management under .
Note
To create service purchase orders in the back-end system, you use a back-end system with release SAP R/3 4.0B or higher.
To order using procurement cards, ensure the following:
The procurement cards have been configured in Customizing for SAP Supplier Relationship Management under
Purchase orders are created locally in the SAP SRM system
The supplier accepts the procurement card.
When creating the shopping cart, the purchaser selects the product category that has been defined for the procurement card in Customizing.
In the Shop application, there are three user interface variants:
Purchasers or purchasing assistants can use the Professional user interface to fill shopping carts with products quickly and easily.
Employees can order products simply by using the Wizard user interface.
Employees who occasionally request products or free-text items can use the simplified shopping cart to order products in a fast and self-explaining way.
You can use the Business Add-In (BAdI) Change Display in Shopping Cart to override the standard settings of the interface and tailor the interface to fit the requirements of your enterprise. You can access this BAdI in Customizing for SAP Supplier Relationship Management under .
A workflow starts once the shopping cart is ordered. This workflow checks whether approval is required.
If an approval is required, a work item is sent to the universal worklist (UWL) of the relevant approver.
If no approval is required, the system creates the necessary follow-on documents, such as purchase requisitions, purchase orders, or reservations, for the shopping cart. The shopping cart information and the Customizing settings in your SRM system determine what types of documents are created and what system they are created in.
For more information about approval workflows, see Process-Controlled Workflows.
Caution
You cannot delete items that have been approved and for which follow-on documents exist in the back-end system. This applies under the following circumstances:
A purchase requisition has been created and the Completed indicator has been set for it, or the quantity received for the purchase order is equal to or greater than the quantity requested.
A reservation has been created and the Final Issue indicator has been set for it, or the quantity withdrawn is equal to the quantity requested.
A purchase order has been created and the Delivery Completed indicator has been set for it, or a goods receipt has been entered.