BR-DE-27

The seller contact telephone number (BT-42) should contain at least three digits — a plausibility check, not a format rule.

Severity: Warning
Applies to: CII, UBL
Rule set: v2026-01-31

Official rule text

In BT-42 sollen mindestens drei Ziffern enthalten sein.

Why it happens

The field holds a placeholder ("-", "0", "n/a") because BR-DE-5 demands some value and the source system has no phone number on file.

How to fix it

Enter a real, reachable number (cac:Contact/cbc:Telephone in UBL, ram:DefinedTradeContact/ram:TelephoneUniversalCommunication/ram:CompleteNumber in CII). The format is free — +49 30 1234567 is fine; it just must not consist of fewer than three digits.

NormAPI provides technical validation, not tax or legal advice.