Definicja tax invoice number

The number assigned, in Thailand, to a tax invoice.

The tax authorities assign you a new set of numbers for each calendar month.

You number customer tax invoices sequentially, using separate number ranges for each tax code.

When you enter a vendor tax invoice, you record the tax invoice number printed on it by your vendor. You also assign it a tax invoice number of your own.

Again, you have to number them sequentially and without any gaps. Separate number ranges are required for different document types.