Generally, the invoicing information of VAT can only be found after 10 to 15 in the following month. Because the VAT must wait until the following month before 10 or 15 (normally, it is 15, and the implementation time standards vary from place to place), the billing unit can only find out after filing with the tax bureau (reporting all billing information to the tax authorities).

According to the regulations of the IRS, the payee must be certified within 90 days from the date of issuing the invoice.

Therefore, the unit makes tax returns as usual. After 90 days, the IRS passed the special VAT invoice comparison. If the other party is not authenticated, the invoice information is missing (missing deduction) and an invoice associated query case is generated. The local IRS will go to their unit to verify.