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Error

FX-SCH-A-000678: Fax number for the tax representative's contact

In short

Error: fails the selected checks.

FX-SCH-A-000678 requires exactly one ram:CompleteNumber element in each fax block for a contact at the buyer's tax representative. Add the missing number element or remove duplicate number elements within the block.

On this page

What it means

The check counts ram:CompleteNumber elements directly inside ram:BuyerTaxRepresentativeTradeParty/ram:DefinedTradeContact/ram:FaxUniversalCommunication. Each fax block that is present must contain one such element. This test does not check the number's contents.

Why it matters

A fax block must contain one number element to follow the Extended profile's structure.

How to fix it

Check the fax details of the contact at the buyer's tax representative. Within ram:FaxUniversalCommunication, keep one ram:CompleteNumber containing the intended fax number. If you are not supplying fax details, omit the optional fax block rather than leaving it empty. Export the invoice again 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

Element 'ram:CompleteNumber' 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-000678 still fails, and which other rules do.

Updated 6 November 2026