OFFICIAL LETTER NO.237/TCT-CS DATED 17 JANUARY 2014 OF GDT IN GUIDANCE OF REPORT OF INVOICE USAGE
According to Official letter No.237/TCT-CS:
Enterprises prepared Notification of invoice issuance submitted to tax authority for usage, but in the report period, there is no usage of invoices (the usage number is zero), the invoice usage situation report is still submitted to tax authority in charge.