regarding stock transfer order

Dear Guru's,

I am trying stock transfer scenario. I have created PO and after that i have created delivery in VL10B, at that time i have got one sales order no ( delivery no). After that i have done delivery in VL02N and i am trying to create bill in vf01. But i am unable to create bill. Incorrect or no billing documents are generated, it is saying.

Pls help me , what are the steps to be configured still?

Thanks in advance,

Regards,

cherukuri