Payables Invoices scanning Tax is created as invoice line item after import, no tax is calculated

Summary

Once the supplier invoice is scanned the tax line shows as a separate item line. But I need this line as tax not item line

Content

Hi 

 

I have just started testing Payables invoice scanning. Next to genuine distribution lines I also added a separate line for the tax (GST). Once I import the invoice the tax line appears as an item line with the word tax in the line description. I actually wanted this to be used for the invoice tax calculation. As mentioned I am testing the invoice scanning. I have attached an example (it's a non-PO based invoice). How should I treat/show the tax on the invoice?