errorEN16931
UBL-SR-51:An address can only have one third line.
Duplicate address line 3. An address can have at most one additional address line (third line).
We can fix this automatically
AUTO-FIX1. Analyze UBL structure issue. 2. Move/add/remove elements as needed. 3. Ensure proper nesting.
No manual changes needed
Upload and Fix NowWhy This Error Matters
Invoice will be rejected by EN16931 validators. These structural rules enforce cardinality and conditional requirements. Fix the duplicate element or provide the required companion element.
Common Causes
- Address contains multiple AddressLine/Line elements
- Only one cbc:AdditionalStreetName or one third line allowed
- Address line 3 appears more than once
- Duplicate third address line in postal address
- ERP exports multiple AddressLine elements
Frequently Asked Questions
Duplicate address line 3. An address can have at most one additional address line (third line).
Duplicate address line 3. An address can have at most one additional address line (third line). You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, UBL-SR-51 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted.
Many instances of UBL-SR-51 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues.
See Also
Last updated: 16 January 2026
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