DE-R-027
Error Guide
š©šŖ DE-R-027: Invalid phone number format. The seller contact telephone number (BT-42) must contain at least 3 digits to be valid. in Germany
WarningMandatory
Invalid phone number format. The seller contact telephone number (BT-42) must contain at least 3 digits to be valid.
Quick Facts
Severity
Warning
Ruleset
PEPPOL_BIS
Fix Confidence
80%
Mandate
B2B Mandatory
Fix Type
Manual
Why This Matters in Germany
Germany requires e-invoicing using XRechnung (UBL), XRechnung (CII), ZUGFeRD 2.x. This warning may cause processing delays in Germany. While not immediately rejected, it should be fixed for compliance.
Invoice Navigator covers 147 XRechnung 3.0.2 rules for Germany. Auto-remediates 89% of top rejection errors.
How to Fix DE-R-027
Invalid phone number format. The seller contact telephone number (BT-42) must contain at least 3 digits to be valid.
Germany E-Invoicing Requirements
Phase
Status
Scope
B2G
Live (Nov 2020)
All federal suppliers
B2B receiving
Live (Jan 2025)
All German businesses
B2B sending
Jan 2027
>ā¬800K annual revenue
B2B sending
Jan 2028
All businesses
Common Causes
- ā¢Seller telephone number format invalid
- ā¢BT-42 must contain at least 3 digits
- ā¢cbc:Telephone too short or contains only text
- ā¢Contact phone number not valid format
- ā¢Telephone field contains non-numeric or too few characters
Fix DE-R-027 automatically
Upload your invoice and let Invoice Navigator auto-remediate this error.