Error while doing delivery of STO

Hi All,

i am creating delivery of STO (Intra company) using T-code Vl10B.

I am getting given below Error messages.

1. Shipping is not allowed for SO "ABCD" & DC "XY" from Plant "ABCD".

2. 00010 delievry from Plant "ABCD" for Material "ABC" is not possiable.

Please suggest where i have missed the configration.

Thanks

PKY