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Error

FX-SCH-A-000510: Use an allowed VAT exemption reason code

In short

Error: fails the selected checks.

FX-SCH-A-000510 means the VAT exemption reason code (BT-121) is not in the VATEX list used by the Basic profiles of Factur-X and ZUGFeRD. Use a listed code matching the actual reason, such as VATEX-EU-AE for reverse charge. Put explanatory wording in the separate reason text field, not in the code field.

On this page

What it means

This rule checks a non-empty ram:ExemptionReasonCode in the document-level tax information against the profile's exemption reason code list. Examples include VATEX-EU-AE for reverse charge, VATEX-EU-IC for intra-community supply, VATEX-EU-G for exports and VATEX-EU-O for supplies outside the scope of VAT. It does not check whether the stated reason applies or whether another rule requires a reason.

Why it matters

A standard code identifies the stated reason in a machine-readable form. Having a recognised code does not establish that the VAT treatment is correct.

How to fix it

Correct ram:ExemptionReasonCode within ram:ApplicableHeaderTradeSettlement/ram:ApplicableTradeTax. If you are supplying wording, put it in ram:ExemptionReason (BT-120). Only replace a code with text where the applicable requirements permit that alternative; do not remove a required reason to clear this check. Recheck the corrected file.

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:ExemptionReasonCode' is not allowed.

Where this rule applies

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

Check your file

Drop your e-invoice to see whether FX-SCH-A-000510 still fails, and which other rules do.

Updated 6 November 2026