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Error

FX-SCH-A-001064: The VAT category of a tax included in the price must be allowed

In short

Error: fails the selected checks.

FX-SCH-A-001064 means the VAT category code of a tax included in the net unit price of a line is not an allowed code. Use a category code from the list, such as S for the standard rate.

On this page

What it means

The category code (ram:CategoryCode) of a tax included in the net unit price of a line must be one of the VAT category codes in the code list of the Extended profile (code list 24 in its code database). Examples are S for standard rate, Z for zero rate, E for exempt from VAT and AE for reverse charge. An empty value is not tested by this rule.

Why it matters

Codes are read by software, not by people. A category outside the agreed list cannot be interpreted, so the file fails the check and the recipient may reject it.

How to fix it

In your invoicing software, choose the VAT category of the item from the list it offers. Use the code letters, not words or percentages. If you build the XML yourself, correct ram:CategoryCode inside ram:IncludedTradeTax under ram:NetPriceProductTradePrice.

Once the file is corrected, check it again for free: Validate a ZUGFeRD invoice

Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice Beta

The rule as published

Value of 'ram:CategoryCode' is not allowed.

Where this rule applies

Rule set Version
Factur-X 1.09 EXTENDED 1.0.9-2
ZUGFeRD 2.5 EXTENDED 2.5.2
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether FX-SCH-A-001064 still fails, and which other rules do.

Updated 5 November 2026