PURCHASE ORDER QUESTION

I AM TRYING TO CLOSE A LINE ON A PURCHASE ORDER.  I RIGHT MOUSE BUTTON IN THE HEADER OF THE PURCHASE ORDER AND CHOOSE REGISTER PURCHASE ORDER ARRIVALS.  I THEN RMB ON THE LINE AND CHOOSE RECEIVE ORDER.  THEN CLICK OK.  I RECEIVE AN ERROR MESSAGE:  THERE ARE NOT ENOUGH COMPONENT PARTS SHIPPED TO THE SUPPLIER TO RECEIVE THIS QUANTITY.  ANYONE HAVE THIS ERROR AND IF SO, HOW DO I CLOSE MY PO?