errorEN16931
UBL-SR-53:CompanyID (VAT Identifier) must be stated when providing the PartyTaxScheme/TaxScheme/ID.
Missing VAT ID with tax scheme. When providing TaxScheme/ID, the CompanyID (VAT identifier) must also be provided.
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
- TaxScheme ID present but CompanyID missing
- cbc:CompanyID required when cac:TaxScheme provided
- VAT scheme specified without VAT identifier
- PartyTaxScheme structure incomplete
- Tax scheme element present but no VAT number
Frequently Asked Questions
Missing VAT ID with tax scheme. When providing TaxScheme/ID, the CompanyID (VAT identifier) must also be provided.
Missing VAT ID with tax scheme. When providing TaxScheme/ID, the CompanyID (VAT identifier) must also be provided. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, UBL-SR-53 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-53 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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