S.O not appearing in MD04

Hi

I had a created a S.O for a material. But that S.O is not appearing in MD04 even after running MRP?

S.O / Division / DC are also correct

All parameters are fine i.e. strategy 20, lot size EX & even S.O qty is higher than existing stock. What could be the reason?

If i change the material master and keep as strategy 40 & load PIR's; i can see the PIR's in MD04....But S.O is not appearing?

Any comments

Rgds