Cancelling Inprocess or Rejected

Hi,

There are some Purchase Orders which are in Rejected or in In-Process state and we want to Cancel those Purcahse Orders.

This activity cannot be done from the front end as the Buyer is not present and Revisions have been made for some Purchase Orders.

Is there any Script avaliable so that we can cancel the Purchase Orders from the Back End?

Regards,

Mohsin Siddiqui