Does Closing Purchase Orders have any Accounting Impact on the GL ?

Hi Carole, there is a Mass Close available where you can use a date range.  As in Note 1477025.1 'Master Troubleshooting Guide for Close Actions in Purchasing'

The Mass Close of Purchasing Documents allows for Purchasing Documents to be closed via a concurrent request rather than having to use the Purchase Order Summary - Tools/Control. It is available in Release 12.1 and forward.  The Mass Close functionality applies to purchasing documents that have been fully processed i.e. batch processing has completed, but are not in the closed status as well as for purchasing documents that the user needs to manually close. The program is applicable to Standard Purchase Orders, Blanket Purchase Agreements, Planned Purchase Orders and Contract Agreement and Blanket Releases.