Applying for electronic invoice online prompts insufficient inventory

Hello dear: What does it mean when the invoice shows insufficient inventory of VAT electronic invoices? Insufficient inventory of electronic invoices generally occurs when companies issue electronic invoices. This situation occurs because the company currently owns The electronic invoice has been issued, and there are no electronic invoices in stock in the invoicing system that can be issued. At this time, the enterprise should apply to purchase a new invoice, and then read it in and issue it.