catering invoices can be invoiced in one day. For a certain purpose, the phenomenon that invoicing is not written on the same day is widespread. The date of invoice issuance may not be the same as the date of purchase on the same day. If the invoice is issued incorrectly and the invoice is reissued after later discovery, it is certain that the date of purchase and the date of invoice issuance are different. However, the invoice date of VAT ordinary invoice cannot be later than the same day, and it must be issued with the local date on the same day, otherwise it is illegal.