BR-CO-10 Sum of line amounts does not match
The invoice states a sum of line net amounts (BT-106) that is not exactly the sum of the individual line amounts (BT-131). A difference of 1 cent is enough.
The message in the validation report
[BR-CO-10] Sum of Invoice line net amount (BT-106) = Σ Invoice line net amount (BT-131).Common causes
- Rounding: the software calculates with more decimals and only rounds the total.
- Line amounts with more than 2 decimals (e.g. 12.345).
- A discount or surcharge was folded into the sum instead of a document-level allowance.
- A line (e.g. an optional item) counts in the data but not on the PDF.
How to fix it
- Round each line amount to 2 decimals, then add them up.
- Put invoice-wide discounts in a document-level allowance (BG-20), not into BT-106.
- Don’t send optional or alternative items as invoice lines.
What it should look like (XRechnung, CII syntax)
<!-- Positionen: 120.00 + 85.50 -->
<ram:SpecifiedTradeSettlementHeaderMonetarySummation>
<ram:LineTotalAmount>205.50</ram:LineTotalAmount>
...Want to read or check an invoice you received? Open XRechnung · Check invoice
More error codes
BR-DE-15Leitweg-ID / buyer reference missingBR-DE-1Payment instructions missingBR-DE-2Seller contact missing (also BR-DE-5, -6, -7)BR-DE-21Not an XRechnung (wrong specification identifier)BR-DE-23-aCredit transfer without IBANBR-DE-18Skonto (cash discount) in the wrong formatBR-CO-15Gross total is not net plus VATBR-S-08VAT breakdown per rate does not matchBR-CL-23Invalid unit code (e.g. “Stk”)
Guides to German e-invoicing
- Open an XRechnung and save it as PDF
- ZUGFeRD or XRechnung: which one do I need?
- E-invoices for small businesses under § 19 UStG
- Sending an XRechnung to a German authority
Rule text from the official KoSIT validation rules (XRechnung 3.0.2, EN 16931). General technical explanation, not tax or legal advice.