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Error

FX-SCH-A-000428: Add the buyer's electronic address scheme

In short

Error: fails the selected checks.

FX-SCH-A-000428 means your buyer's electronic address (BT-49) has no schemeID attribute (BT-49-1). Add the scheme for that address to ram:BuyerTradeParty/ram:URIUniversalCommunication/ram:URIID.

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What it means

In the Basic WL, Basic, EN 16931 and Extended profiles of Factur-X and ZUGFeRD, each buyer ram:URIID in ram:URIUniversalCommunication must have a schemeID attribute. This rule checks that the attribute exists, not its value or the address's usability.

Why it matters

The scheme identifies the addressing system used for the buyer's electronic address.

How to fix it

Check which addressing system the buyer uses. Add the corresponding schemeID to ram:BuyerTradeParty/ram:URIUniversalCommunication/ram:URIID, for example EM for email, 0088 for a GLN or 0204 for a Leitweg-ID. If your exporter omits it, correct the source data or ask its supplier to correct the export. 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-000428 still fails, and which other rules do.

Updated 6 November 2026