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Error

FX-SCH-A-000871: Each invoicee telephone entry needs one number element

In short

Error: fails the selected checks.

FX-SCH-A-000871 means a telephone entry in your invoicee's contact details contains either no ram:CompleteNumber element or more than one. Give each ram:TelephoneUniversalCommunication entry exactly one ram:CompleteNumber.

On this page

What it means

For each ram:TelephoneUniversalCommunication under ram:InvoiceeTradeParty/ram:DefinedTradeContact, this rule counts its ram:CompleteNumber children. The count must be one. It does not check whether the number text is filled in or correct.

Why it matters

Each telephone contact entry uses one element to hold its number.

How to fix it

Under ram:ApplicableHeaderTradeSettlement/ram:InvoiceeTradeParty/ram:DefinedTradeContact/ram:TelephoneUniversalCommunication, add a missing ram:CompleteNumber containing the intended telephone number, or remove extra ram:CompleteNumber elements. Keep exactly one in each telephone entry. Export and recheck.

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-000871 still fails, and which other rules do.

Updated 6 November 2026