BR-AE-05: VAT rate inconsistent with category "AE"
This code shows up when an electronic invoice is validated. Here is what it means, why it fires, and what to change in the file.
Why this code appears
A line declares VAT category AE (reverse charge) but carries a rate that does not match it. Under reverse charge, VAT is owed by the customer: the rate written on the invoice is 0.
How to fix it
Bring the rate in line with the category, or change the category. The two go together: the (category, rate) pair decides the tax treatment at your customer's end, and no portal will choose on your behalf.
Where it happens
This code comes from EN 16931, the European e-invoicing standard. It concerns business term BT-152.