• How and why Ocerra extracts tax number

Tax number is your supplier's GST or ABN number. It is not recorded by the AP or used during export to your system. 

In Ocerra, we use it to validate a supplier name on top of the other validation techniques. The way it is extracted is not critical.

Also, any unique information on the invoice can be extracted and trained into the Tax Number filed. Very often, it is just a phone number. It still does the same job for us.

This is a normal extraction behaviour for the tax number field: