If you created a bill *not associated with an existing checkout* then there is no item. You have, at that point, created a "Grocery" billing, unassociated with any circulations. As there is no circulation there is also no item.
If you created a bill *not associated with an existing checkout* then there is no item. You have, at that point, created a "Grocery" billing, unassociated with any circulations. As there is no circulation there is also no item.