When the registration type selected is Manufacturer, the default rule 11 book gets created. As per business requirements, you can either create more rule 11 books or modify the default book.
To allow rule 11 book details
1. Click F12: Configure from the Excise Registration Details screen.
2. Enable the option Enable Rule 11 Book details.
3. Press Ctrl+A to go to the Excise registration details screen.
4. Enable Set/alter Rule-11 book details to configure the default book, or create a new rule 11 book.