errorubl-2.1
UBL-SR-03:UBL element order incorrect
UBL elements must follow schema-defined order.
We can fix this automatically
AUTO-FIXAuto-fix: Keep the first occurrence and remove duplicate elements. EN16931 requires exactly one of this element.
No manual changes needed
Upload and Fix NowWhy This Error Matters
Invoice will be rejected by EN16931 validators. These structural constraints ensure consistent processing by receiving systems.
How to Fix It
1
Check schema
UBL defines strict element order
2
Reorder elements
Match schema sequence
Technical Details
XPath: Various - depends on specific violationCommon Causes
- ERP system exports multiple references where only one is allowed in EN16931
- Data consolidation merged records that should have been deduplicated
- Template or mapping incorrectly configured to output duplicate elements
- Manual editing introduced extra elements
- Invoice conversion from another format did not merge duplicate entries
Frequently Asked Questions
UBL elements must follow schema-defined order.
Reorder elements according to UBL 2.1 schema. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, UBL-SR-03 is a critical error that will cause invoice rejection. It must be fixed before submission.
Related Errors
Last updated: 16 January 2026
Share this guide: