"No subtransaction type allowed for this invoice"

Dear Gurus

While creating excise invoice (j1iin) from billing I am getting an error "No subtransaction type allowed for this invoice" . I get this error when I try to save the excise invoice. I am using subtransaction type.

The required config for subtransaction is done. The necessary excise account detemination is done.The config done is

1. excise account per transaction

2. G/ L account per excise.

Is there any setting that is missing?

Regards,

DDP