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BR-31:Payment due date recommended

The invoice should specify when payment is due.

Fix this in your source system

MANUAL

Payment terms affect cash flow and contractual obligations. Due dates must be set according to your business agreements.

See the step-by-step instructions below to fix this error manually.

Why This Error Matters

Invoice rejected. Cannot calculate invoice totals without allowance amounts.

How to Fix It

1

Add DueDate

Specific date in YYYY-MM-DD format

2

Or PaymentTerms

Describe terms like Net 30

3

Calculate from issue

DueDate = IssueDate + payment terms

Code Example

<cbc:DueDate>2025-01-18</cbc:DueDate>
<cac:PaymentTerms>
  <cbc:Note>Payment due within 30 days</cbc:Note>
</cac:PaymentTerms>

Technical Details

XPath: /Invoice/cbc:DueDate or /Invoice/cac:PaymentTerms/cbc:Note

Common Causes

  • Document allowance added without amount value
  • AllowanceCharge/Amount field not mapped in export
  • Percentage discount without base amount to calculate
  • Allowance template missing amount field
  • Zero-value allowance exported with null instead of 0

Commonly Seen In

All invoicing software

Frequently Asked Questions

The invoice should specify when payment is due.
Add DueDate or describe terms in PaymentTerms. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
BR-31 is a warning that may not always cause rejection, but it indicates a potential compliance issue that should be addressed to ensure full compatibility.
Many instances of BR-31 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including payment due date recommended.
BR-31 is commonly seen in exports from All invoicing software. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.

Related Errors

BR-03

Invoice must have an issue date

BR-30

Invoice line period end date before start date

Last updated: 18 January 2026

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