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Error

FX-SCH-A-001043: A line seller's contact email needs exactly one address

In short

Error: fails the selected checks.

FX-SCH-A-001043 means your contact email block for the seller on an invoice line contains no ram:URIID element or more than one. Keep one ram:URIID containing the contact's email address.

On this page

What it means

In Factur-X and ZUGFeRD Extended, each ram:EmailURIUniversalCommunication inside ram:DefinedTradeContact of the line's ram:ItemSellerTradeParty must contain one ram:URIID. This test counts elements, not whether their contents are valid email addresses.

Why it matters

The contact email has one address field in this XML structure. Missing or repeated address elements do not match that structure.

How to fix it

Correct the affected ram:EmailURIUniversalCommunication inside the line seller's ram:DefinedTradeContact. Add the missing ram:URIID or remove duplicate elements, leaving one with the intended email address. Export the corrected file and check it again.

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

Element 'ram:URIID' must occur exactly 1 times.

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-001043 still fails, and which other rules do.

Updated 6 November 2026