errorEN16931
BR-CL-17:Invoice tax categories MUST be coded using UNCL5305 code list
A VAT Category Code is not a valid UNCL5305 code. Valid codes: S=standard, Z=zero, E=exempt, AE=reverse charge, K=intra-community.
Why This Error Matters
Invoice rejected. Tax categories must use standard codes for VAT reporting.
Common Causes
- VAT category code not from UNCL 5305 list
- Custom tax category code used instead of standard
- Tax type stored as description not code (S, Z, E, etc.)
- Invalid VAT category code for EN16931
- National tax code not mapped to UNCL 5305
Frequently Asked Questions
A VAT Category Code is not a valid UNCL5305 code. Valid codes: S=standard, Z=zero, E=exempt, AE=reverse charge, K=intra-community.
A VAT Category Code is not a valid UNCL5305 code. Valid codes: S=standard, Z=zero, E=exempt, AE=reverse charge, K=intra-community. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, BR-CL-17 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted.
Many instances of BR-CL-17 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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