In view of your problem, there may be the following reasons

The data synchronization cycle of the system needs at least one day, so the invoices issued on that day cannot be retrieved on this platform;

2. The status of this invoice is abnormal (including invalid, out of control, red offset, etc.);

3. This invoice has exceeded the deduction time limit;

4. This invoice has been deducted before the current month;

5. The related systems and networks of the tax bureau have failed, resulting in the related invoice data not being synchronized to this system in time;

6. The billing party has not uploaded the invoice information or it is a fake invoice.

The invoice information is not found at the end of the month, which may affect the taxpayer's normal declaration and deduction business in the next month. It is suggested that the taxpayer temporarily use scanning authentication for the invoices that have not been found.