Delivery problem in downpayment

Hi SAP Gurus,

I have configured everything for downpayment request.

Item category TAO, it.ct. group 0005,and everything I have configured.I am also getting the downpayment invoice FAZ.I have laso configured the billing plan.Everything is correct.

But when I want to create a delivery for this order, delivery is not creating.While PGI it is showing error. So how for this sales order and material (which for down payment request), I will create the delivery.

Reward points for helpful answer.

Regards

Ashis