First of all, the statement that the invoice is true

The catering invoice is not overdue can only be related to your accounting treatment. According to the accounting standards for business enterprises, enterprises must carry out accounting treatment on an accrual basis, that is, whether the expenses incurred in the current month are paid or not, they are accounted for according to the expenses of the current month; Anyway, those paid in the current month but not included in the current expenses shall not be included in the current profits and losses.

It's difficult to follow the guidelines completely in practical work, so as long as you get the invoice and it's true, you can make an account as long as it doesn't cross the period or even the new year. It's not overdue!