Fix rejected e-invoices

Invoice rejected?

Understand the error. Add what is missing. Check again.

We first check whether your file can be corrected here. Structural errors usually have to be fixed in the invoicing system. We tell you right away, free of charge.

Checking is free.Corrected file: €1.90 [VAT note].First correction every 30 days free.No sign-up.

What this check settles
Details are missing. You supply them, we enter them and check again.
The export is broken. You get the error report for your ERP support. Free.
The file passes. Download with check protocol, timestamp and checksum.
Common rejections
BR-DE-15Fixable here
Buyer reference (Leitweg-ID) is missing.
BR-DE-1Fixable here
Payment details are missing.
cvc-complex-type.2.4.aIn the invoicing system
The file structure is broken.

All 1,388 error codes, explained

Example checksynthetic invoice · actually run
File
Finding0 rules failed
Changed0 details added
ValidatorKoSIT Validator 1.5.0
RulesetXRechnung 3.0.2 configuration
ResultPassed
Time2026-09-14 07:00:25 UTC
SHA-256e8ca74c84d400e1be705218ecb220becd45bde9fa8619d5121e4616b967fb0a7

Proven: this file passed this check at this time. Not proven: tax correctness or acceptance by the recipient. The proof contains no invoice content.

What we change. And what we don't.

We never change amounts, line items or taxes.
+We only add missing mandatory details that you confirm yourself.
+Every output is checked with the KoSIT validator, the one public authorities use.
+What becomes public: only checksum, time and result. Never the invoice content.

Prices

€0Checking, error report, first corrected file every 30 days.
€1.90Each further corrected file. Paid only after the check passes, at download.
€9 / monthUnlimited, cancel monthly. Access via your email address, no password.