Hi,
The error is suggesting the VAT combination used on the invoice isn't configured in the VAT Posting Setup. i.e. looking at the error this would be a VAT combination of VAT Business Posting Group being DEDUCT and a VAT Product Posting Group of '' (or blank)
You can check your VAT posting setup by searching "VAT Posting Setup"
In the example above I've created a VAT combination of DOMESTIC for the business posting group and blank for the product posting group. Looking at your message you'd need a business posting group of DEDUCT and a product group of blank.
Saying that I'd suggest that perhaps the GL code should have a VAT Prod. Posting Group defined and this has been omitted in error. You can check this on the GL card.
If one has been omitted select it on the card and then add the GL code back onto the invoice to pull this onto the invoice.
If it still fails then check the VAT Posting Setup to ensure that combination of VAT Bus. Posting Group and VAT. Prod. Posting Group exists as well.
I hope this helps
Thanks
Gavin
