undo partial receipt on Purchase Order

NAV 2009 RTC

PO with a quantity of 160, 100 were supposed to be received, but 160 were received by accident.

Meanwhile, 100 have been invoiced.

Now I have 60 remaining on the PO to be invoiced, but these will never be invoiced.

I can’t undo this because part of the receipt has been invoiced.

Any ideas how to ‘un receive’ my quantity of 60 and delete the PO ?

i believe we cannot undo receipt for orders that are partially or fully invoiced. would you like to fully invoiced the order? (i mean invoice the remaining 60) so you can close the order. then do credit memo and return order for the 60 ;o)

Yeah, this may be the option. Does anyone else have any ideas ?