Batch determination is not happening for the ZOR sales order.

Hello All,

I have created an order type ZOR for local sales coping the standerd order type OR.

After creating a sales order when when I am going to create delivery batch determination is not happening for the ZOR sales order.

But it is working fine for the OR sales Order..

Its a typical behaviour of the system.

Kindly suggest how to correct it...

Regards

Venkat..