API Base URL: https://demo.evat.vn/
A. Issuing invoices with tax authority code (hóa đơn có mã):
	1. Using Basic Authentication:
		ClientID / API User: 0312303803-999
		Client Secret / API Password: f0036603ef8fbb827b915e03199386e6053fc7e708ac25af
	2. Invoice template information:
		- Template that generates invoice numbers at signing time:
			Invoice form number: 1
			Invoice symbol: C__TGT
		- Template that generates invoice numbers immediately upon creation:
			Invoice form number: 1
			Invoice symbol: C__TAT
		- Invoice template generated from cash register systems:
			Invoice form number: 1
			Invoice symbol: C__MAA
		- Internal transportation invoice template:
			Invoice form number: 6
			Invoice symbol: C__NNB
		- Note: Replace __ in the invoice symbol with the last two digits of the current year.
			Example: C24TGT, C24TAT, 6C24NNB
B. Issuing invoices without tax authority code (hóa đơn không mã):
	1. Using Basic Authentication:
		ClientID / API User: 0312303803-998
		Client Secret / API Password: 8e2282387ec262ecfab831bbca2892e737e419b5ddbe855f
	2. Invoice template information:
		Template that generates invoice numbers at signing time:
			Invoice form number: 1
			Invoice symbol: K__TGT
		Sales invoice template:
			Invoice form number: 2
			Invoice symbol: K__TBV
		Note: Replace __ in the invoice symbol with the last two digits of the current year.
		Example: C25TAA, K25TGT