Production Order Component Not Displaying in Purchase Order

Hi Experts,

         When i am adding component & Creating Requisition in  operation 10 and raising Purchase Order, Production Order Operation component not displaying in Purchase Order .

     Instead  i am adding component in operation 10 and releasing that and creating requisition in Operation 20 and raisng Purchase Order, Production order operation components viewing in Purchase Order .

   I am using message type NJPP.Please guide Customising or message type Problem?