The entry is not balanced.  The total $2100 currently equals $0 in your header.

You have put the $2100 in the header in the Ship Date field.

I tried this but indiferrently of the Ship Date value we are receiving an "Invalid total amount" message. 

When I exported a purchase invoice from Sage to see the IMP file format it did not contain a Ship Date field. 

So we thought this field was not necessary for purchase invoices

IMP file with Ship Date:

Thanks

Sorry, I think the problem is that the Ship Date is only required for importing a Purchase Quote and is not used in a Purchase Invoice (don't ask, I don't know why).  Try removing it and the comma, and then leaving the rest the same (9 fields across the header).

If that doesn't work, copy the text of your *.imp file into a message, not an image so I can copy it into a file here and I will test it when I get a chance.

Sorry, I think the problem is that the Ship Date is only required for importing a Purchase Quote and is not used in a Purchase Invoice (don't ask, I don't know why).  Try removing it and the comma, and then leaving the rest the same (9 fields across the header).

If that doesn't work, copy the text of your *.imp file into a message, not an image so I can copy it into a file here and I will test it when I get a chance.

That's what I already did and the message was "The transaction is not balanced". 

<Version>
"12001", "1"
</Version>
<PurInvoice>
"AAAAAAA","0", ,"BBBBBBB", ,"CCCCC","DDD","EEEEE", , , ,
"1","11111","2222","07-09-2019","2100.00","0.00","0","0","0.00"
"BT","200.0000","10.5000","2100.00"
</PurInvoice>

Thanks