1. If the credit rating is not enough, verification and authentication cannot be performed on the VAT invoice verification platform. At the same time, if the enterprise implements simple collection, then the value-added tax cannot be deducted from the input tax, so it can't be found on the VAT invoice verification platform.

Check the certification methods for general taxpayers of grade A, B, M and C VAT. ..

Second, the invoice cannot be found mainly for the following reasons:

1. Because it takes 1 day to synchronize the invoice information data currently issued to this platform, this platform does not include the invoice issued on that day.

2. The invoice issued by the seller offline cannot be found on this platform, and can only be reflected on this platform after the seller uploads the invoice to the tax bureau.

4. The VAT invoice verification platform only provides the invoice query function of recent and unexpired invoices (invoices that have not reached the certification deduction period). If the invoice has expired, it cannot be queried on the check platform.

4. If the above conditions do not exist, the invoice cannot be found. First, confirm whether it is a VAT invoice, and check whether the invoice exists on the national invoice inspection platform.