Skip to content

Error

FX-SCH-A-000438: Use an allowed tax representative scheme code

In short

Error: fails the selected checks.

FX-SCH-A-000438 means a non-empty scheme code on your seller's tax representative's tax registration identifier is not in the Basic WL profile's list. For the tax representative's VAT number (BT-63), use VA.

On this page

What it means

In the Factur-X and ZUGFeRD Basic WL profiles, this rule checks schemeID on ram:ID inside ram:SellerTaxRepresentativeTradeParty/ram:SpecifiedTaxRegistration. A non-empty code must appear in the profile's list. An empty code value does not fail this particular test.

Why it matters

The scheme code identifies the type of tax registration number you have supplied. This check does not establish whether the number itself is correct or how a recipient will handle the file.

How to fix it

For the tax representative's VAT number, set schemeID="VA" on ram:ID inside ram:SellerTaxRepresentativeTradeParty/ram:SpecifiedTaxRegistration. Do not use VAT or a country code such as DE as the scheme code. Export your corrected file and recheck it.

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 '@schemeID' is not allowed.

Where this rule applies

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

Check your file

Drop your e-invoice to see whether FX-SCH-A-000438 still fails, and which other rules do.

Updated 6 November 2026