What is an e-invoice evidence pack?

An Evidence Pack is an audit-ready compliance certificate generated for every invoice processed through Invoice Navigator. It contains the original invoice, validation results, remediation log, SHA-256 hash, QR verification code, and links to the exact rule versions used during validation.

Why do you need compliance evidence for invoices?

EU e-invoicing regulations require businesses to demonstrate compliance during audits. An Evidence Pack provides cryptographic proof that an invoice was validated and (if applicable) remediated correctly, with a verifiable record of every rule checked and every change made.

What should an audit trail contain?

A complete audit trail should include: the original invoice, all validation results, any corrections applied, the rule set versions used, a timestamp, and cryptographic verification (hash + QR code). Invoice Navigator Evidence Packs include all of these.

How does the QR verification work?

Each Evidence Pack includes a QR code that links to a verification page on Invoice Navigator. Scanning it confirms the Evidence Pack is authentic, unmodified, and was generated by Invoice Navigator for that specific invoice.

Are evidence packs included in all plans?

Evidence Packs are generated for every invoice processed through the API on paid plans. Free trial users receive 3 lifetime Evidence Packs to evaluate the feature.

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What is an Evidence Pack?

An Evidence Pack is Invoice Navigator's audit-ready compliance certificate containing the original invoice, validation results, remediation log, SHA-256 hash, QR verification code, and links to the exact rule versions used.

Quick facts

ContentsOriginal + fixed invoice, validation report, remediation log

IntegritySHA-256 hash + QR verification code

TraceabilityLinks to exact rule set versions used

FormatZIP archive with structured JSON + PDF certificate

GenerationAutomatic — one per processed invoice

How an Evidence Pack works

What's in an Evidence Pack?

Light Evidence Pack (Free)

JSON validation report
List of issues found and fixes applied
SHA-256 hash of original and fixed files

Full Evidence Pack (Pro/Business)

Everything in Light, plus:
Original invoice file (before fixes)
Fixed invoice file
Detailed change manifest (XPath, before/after values)
PDF summary report
Timestamp certificate
All in a single ZIP archive

Cryptographic Verification

Each Evidence Pack includes SHA-256 hashes:

Original hash: Proves the original file hasn't been modified
Fixed hash: Proves the fixed file is exactly what we generated
Pack hash: Proves the Evidence Pack itself is authentic

Why an Evidence Pack matters

For Auditors and Compliance

E-invoicing mandates often require proof of validation. An Evidence Pack provides:

Timestamped proof: When was the invoice validated?
Rule reference: Against which EN 16931 rules?
Change documentation: What was modified and why?
Cryptographic verification: Has anything been tampered with?

For Internal Records

Even without an audit, Evidence Packs help you:

Track which invoices were auto-fixed
Understand what changes were made
Prove compliance at any point in time

For Disputes

If a customer or supplier questions an invoice, you have complete documentation of its state at validation time.

How to get started

Getting Your Evidence Pack

Upload and fix your invoice in the Fixer tool
On the results page, click "Download Evidence Pack"
Light (JSON) is available for all users
Full (ZIP) requires Pro or Business tier

Retrieving Past Evidence Packs

Pro and Business users can retrieve Evidence Packs for past fixes:

Go to your Dashboard
Find the fix in your history
Click "Download Evidence Pack"

Quick Start Guide
Full fixer walkthrough
E-Invoice Remediation
How auto-fix works
Pricing
Compare Light vs Full packs

Frequently Asked Questions

What is an e-invoice evidence pack?: An Evidence Pack is an audit-ready compliance certificate generated for every invoice processed through Invoice Navigator. It contains the original invoice, validation results, remediation log, SHA-256 hash, QR verification code, and links to the exact rule versions used during validation.
Why do you need compliance evidence for invoices?: EU e-invoicing regulations require businesses to demonstrate compliance during audits. An Evidence Pack provides cryptographic proof that an invoice was validated and (if applicable) remediated correctly, with a verifiable record of every rule checked and every change made.
What should an audit trail contain?: A complete audit trail should include: the original invoice, all validation results, any corrections applied, the rule set versions used, a timestamp, and cryptographic verification (hash + QR code). Invoice Navigator Evidence Packs include all of these.
How does the QR verification work?: Each Evidence Pack includes a QR code that links to a verification page on Invoice Navigator. Scanning it confirms the Evidence Pack is authentic, unmodified, and was generated by Invoice Navigator for that specific invoice.
Are evidence packs included in all plans?: Evidence Packs are generated for every invoice processed through the API on paid plans. Free trial users receive 3 lifetime Evidence Packs to evaluate the feature.