GOODS RECEPT-(MIGO-PO NO.KNOWN)

HY GUYS,

I'M GETTING THE FOLLOWING PROBLEM.....

I Created a PO....But when I'm trying to post Goods Receipt( MIGO-PO NO.KNOW)...system issuing a message that PO has no items

but when I'm displaying my PO,,its showing me all things...if my PO is not realeasd...plz let me how I can do this..& where or guide me about this problem...& how I can solve it... please help me urgently...I will be very thankful to all of u...

Regards..