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Error

FX-SCH-A-000751: The sales agent's tax registration needs a scheme attribute

In short

Error: fails the selected checks.

FX-SCH-A-000751 means ram:ID in the sales agent's tax registration is missing its schemeID attribute. Add the attribute with the scheme code appropriate to the registration, then recheck your file.

On this page

What it means

In the Extended profiles of Factur-X and ZUGFeRD, ram:SalesAgentTradeParty/ram:SpecifiedTaxRegistration/ram:ID must have a schemeID attribute. The test checks only whether the attribute exists. An empty attribute satisfies this particular test; the test does not check which codes are permitted.

Why it matters

The scheme attribute records the kind of tax registration number. The profile requires a place for that information on each tax registration identifier.

How to fix it

Check whether your sales agent's number is a VAT number or a national tax number. Add the matching schemeID to ram:ID under ram:SalesAgentTradeParty/ram:SpecifiedTaxRegistration. Correct the source data or export mapping so the attribute is included with the number, then recheck the resulting 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

Attribute '@schemeID' is required in this context.

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-000751 still fails, and which other rules do.

Updated 6 November 2026