errorpeppol-bis-3
PEPPOL-EN16931-R121:Base quantity must be positive
Price base quantity must be > 0.
We can fix this automatically
AUTO-FIXAuto-fix: Set base quantity to 1 if zero, empty, or negative. Safe default because most items are priced per single unit.
No manual changes needed
Upload and Fix NowWhy This Error Matters
Invoice will be rejected by PEPPOL validation. Zero or negative base quantity makes price calculation impossible.
How to Fix It
1
Check base quantity
Price/BaseQuantity value
2
Use positive
Typically 1, cannot be 0 or negative
Technical Details
XPath: /Invoice/cac:InvoiceLine/cac:Price/cbc:BaseQuantityCommon Causes
- Base quantity is zero
- Base quantity is negative
- Field left empty defaulting to zero
- Data entry error
- ERP exports invalid base quantity
Frequently Asked Questions
Price base quantity must be > 0.
Set BaseQuantity to positive number (default 1). You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, PEPPOL-EN16931-R121 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.
Many instances of PEPPOL-EN16931-R121 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including base quantity must be positive.
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Last updated: 16 January 2026
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