Problem In Intercompany Billing

Hi

I have a case where i am doing intercompany STO.

Purchase Order -

Delivery --- GI -- IBilling

Everything is OK untill I do GI against Delivery , but when i try creating invoice against the delivery document it throws error

No Billing Documents Can be generated . See log

When i go to Log there is no error log generated.

Please help me out urgently.

Regards

Jay