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Error

FX-SCH-A-000420: Add the buyer identifier scheme

In short

Error: fails the selected checks.

FX-SCH-A-000420 means your buyer's global identifier (BT-46) has no schemeID attribute (BT-46-1). Add the attribute to ram:BuyerTradeParty/ram:GlobalID with the code for the identifier's numbering scheme.

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What it means

In the Basic WL, Basic, EN 16931 and Extended profiles of Factur-X and ZUGFeRD, every buyer ram:GlobalID must have a schemeID attribute. This rule checks that the attribute exists, not whether its value is valid or non-empty.

Why it matters

The scheme identifies the numbering system used for the buyer's identifier.

How to fix it

Check which numbering system the buyer's identifier uses. Put the corresponding code in ram:BuyerTradeParty/ram:GlobalID/@schemeID, for example 0088 for a GLN or 0060 for a DUNS number. Make sure the code matches the actual identifier, then export and recheck your 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 BASIC WL 1.0.9-2
Factur-X 1.09 BASIC 1.0.9-2
Factur-X 1.09 EN 16931 1.0.9-2
Factur-X 1.09 EXTENDED 1.0.9-2
ZUGFeRD 2.5 BASIC WL 2.5.2
ZUGFeRD 2.5 BASIC 2.5.2
ZUGFeRD 2.5 EN 16931 2.5.2
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-000420 still fails, and which other rules do.

Updated 6 November 2026