Identify before handling errors on e-invoices:
Error type
1. Wrong address;
2. Wrong tax code;
3. Wrong company name;
4. Wrong quantity, unit price, amount;
5. Wrong tax rate.
The status of the invoice is wrong
1. Whether the unit is using an e-invoice with an authentication code or no of the Tax Authority's code.
2. When detecting errors, the e-invoice has been declared tax by the seller and the buyer.
