Withholding Tax Colombia

Working with WHT for Colombia on invoice posting. Have created a bunch of pricing conditions for the different types of WHT. The pricing conditions and FI postings are working as expected with this one scenario we cant figure out.

We have an order with 2 line items. One line is not relevant for WHT or VAT tax; and the second line is. We have a WHT code setup for 0% as well for 11%. The FI posting for the WHT works as expected if we have both lines VAT billable. However the VAT amount is incorrect. If we make one line tax relevant and the other one not relevant the WHT amount is incorrect but the VAT is correct.

I'm not sure what the connection is between the WHT and VAT and why it is reacting this way.

Any suggestions would be greatly appreciated.

Pamela