is there a way to bulk / mass delete Purchase Order Lines?

Oracle EBS 12.2.11 Purchasing

Scenario:

Buyer has created a purchase order with 500 lines. The Order is in an Incomplete status and the buyer now needs to delete 100 of the lines and return them to the Demand Workbench for award to a different supplier. Is there a way to do this as one mass / bulk delete action instead of deleting each line one by one which can take an hour through the OAF UI.