Automatic Updating 
At the end of a settlement period, all purchases should be updated in the accounting backend system. Together with the posted invoice, this results in a balanced clearing account. If all purchases are not approved within the specified period, you can start the BBPPCRECN report (Automatic Reconciliation of Procurement Card Statements) in the SAP SRM Supplier Relationship Management (SAP SRM) system.
Schedule the report to run regularly in the background.