Specifying the Account Assignment and Approval Procedures 
You specify the following:
Which account assignment should be specified for the individual purchases
Whether the cardholder should check the individual purchases
Whether the cardholder's superior should monitor purchases
Prerequisites
If you want to implement approval procedures, you must set up the new workflow in the SAP Supplier Relationship Management (SAP SRM) system.
Menu path in Customizing:
Supplier Relationship Management 
SRM Server
Cross-Application Basic Settings Business Workflow 
You have to enter the card company and the procurement cards. In the procurement cards, you specify who checks the purchases.
Menu path in Customizing:
Supplier Relationship Management SRM Server
Procurement Card You have to create the account assignments required in Accounting in the back-end system.
Features
If you implement the approval procedure, the cardholder receives a work item in his inbox. He or she checks the information for his or her procurement card and can change the cost objects suggested. He or she can also distribute the individual purchases to various cost objects.
Next, the manager receives a work item and can monitor the purchases. He or she can also change the cost object and distribute purchases.
The transaction figures in the back-end system are then updated.
Note
Cardholders and managers cannot reject the work item when they process it. If the settlement data contains errors, you can leave the work item in its current status and take organizational measures.
The system always generates the invoice.