Oracle Purchasing- User cancelled PO midway after having recived partial qty and now wants to undo c

Hi,

  Have an issue on hand . The user cancelled the Po accidently . The line shows the cancelled check box as checked . Is this the standard functionality that if you have recieved some qty out of the ordered qty , you can cancel the order midway.

The Reciepts exists with invoices.

The customer wants to undo the cancellation as this PO status is linked to other applications which havenot cancelled the PO. Can i be explained the functionality and any solution to undo the cancellation.

QTY Ordered was =50000

Received =17732

Billed =17732

 

Cancelled qty =32268