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operational approach
0 1
The upper left corner is the invoice code, and the upper right corner is the invoice number.
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02
Some invoices will indicate the invoice code and invoice number, while others will not, but two strings of numbers will be written on the left and right sides of the invoice, such as "1300053 140" on the left and "NO 02995606" on the right.
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03
Where "1300053 140" is the invoice code and "02995606" is the invoice number. The general invoice number is the one with fewer digits, and the rest is the invoice code.
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