Stop Invoice Rejections Before They Leave Your ERP
A controlled compliance safety layer for EU e-invoicing pipelines.
Built for ERP vendors and integrators shipping cross-border invoices.
Validate. Safely remediate. Revalidate via KoSIT. Generate audit evidence. Automatically.
Safe remediation policy: amounts, VAT totals and IBANs are blocked by design.
Every remediation is logged. Every invoice is revalidated before release.
Invoice Navigator
Not a validator. A pre-submission compliance gate.
1,300+
Validation Rules
2026.02
Rule Set Version
Feb 2026
Last Updated
99.9%
Uptime
Validation is not the problem. Pipeline drift is.
Invoice validation fails in production — not in documentation.
Real pipelines break because:
- ERP template drift across customers
- CIUS fragmentation per country
- Strict validator rejections on structural edge cases
- Missing business data requires controlled input
- Rejections create payment delays and support tickets
Validation tools show errors.
They don't stabilize pipelines.
Built for Teams Shipping Invoice Pipelines
ERP Vendors
Your export templates work until they don't. When a customer's invoices start getting rejected in production, the support tickets land on your desk. Invoice Navigator catches structural drift before submission — across all your customers, all their countries.
REST API, no SDK required
Integrators
Mandate go-lives are deadline-driven and country-specific. Your pipeline needs to validate against the right CIUS, remediate what's safe, and flag what's missing — without you maintaining rule sets per jurisdiction.
Sandbox available for integration testing
Accounting Firms
Multi-client invoice batches from different ERPs, different formats, different countries. One API call validates and remediates the batch. Evidence packs per invoice for audit.
Bulk upload endpoint available
Designed for pipelines. Not manual uploads. Typical setup time: less than one sprint.
A Compliance Gate Between Your ERP and Delivery
Invoice Navigator sits between your exporter and submission.
- —Classifies validation findings
- —Safely remediates structural compliance issues
- —Requires explicit input for business-critical data
- —Blocks financial fields from modification
- —Revalidates before release
- —Generates a structured evidence pack
Designed for Safety, Not Convenience
Safe Auto-Remediation
Structural corrections where commercial meaning is unchanged. Namespace repair, encoding fixes, disallowed element removal.
Input-Required Workflow
Missing business data triggers explicit input — never assumptions. Missing buyer endpoint ID, missing payment means code.
Financial Field Blocking
Amounts, VAT totals, IBANs are never modified. Hardcoded, not configurable.
Revalidation Loop
Every remediated invoice is validated again before being released downstream. Via KoSIT, the official German validation framework.
Every action is logged.
Every invoice receives a structured evidence pack.
No guessing.
No silent mutations.
No financial edits.
Just controlled remediation and proof.
This is compliance infrastructure — not formatting.
What It Replaces
Hiring a compliance engineer to maintain rule sets and fix edge cases typically costs €60–80K/year in most EU markets. A part-time contractor runs €2–3K/month.
The Pro plan handles it at €499/month. For your entire pipeline.
See the Safety Layer in Action
Three scenarios. User-triggered. Every state transition is explicit.
<Invoice xmlns="urn:oasis:names:...ubl:2"> <CustomizationID>urn:cen.eu:en16931:2017</CustomizationID> <ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ProfileID> <ID>INV-2026-0847</ID> <IssueDate>2026-02-19</IssueDate> <InvoiceTypeCode>380</InvoiceTypeCode> <Note>Project delivery Q1</Note> <MandateTypeCode>B2B</MandateTypeCode>UBL-CR-435 <AccountingSupplierParty> <Party> <EndpointID schemeID="0088">4398823</EndpointID> <PartyName> <Name>Müller GmbH</Name> <PayableAmount currencyID="EUR">12,450.00</PayableAmount> <TaxAmount currencyID="EUR">2,365.50</TaxAmount>Findings
UBL 2.1 Cross-Industry
Disallowed element MandateTypeCode
Best experienced on desktop for the full interactive console.
Scenario
What Happens in Production
An ERP vendor exports 3,000 invoices per month across DE, BE, NL, and FR.
Their export templates work for most invoices. The rest fail: missing CustomizationID after a template update, decimal precision mismatches on French invoices, disallowed elements left over from an old Peppol profile.
Without a compliance gate, those invoices get rejected at the access point. Each rejection creates a support ticket, a payment delay, and an unhappy customer.
With Invoice Navigator in the pipeline:
- —Most are auto-remediated (structural fixes, no financial data touched)
- —Some trigger input-required workflows (missing buyer endpoints, payment means)
- —A handful are blocked (financial field discrepancies that need human review)
- —Every invoice gets an evidence pack for audit
The rejection rate typically drops from double digits to under 2%. No new hires. No compliance contractors. One API endpoint.
One Endpoint. Full Pipeline.
POST /v2/validate-and-fix
| 1 | { |
| 2 | "xml": "<?xml version=\"1.0\"...>", |
| 3 | "fileName": "INV-2026-0847.xml", |
| 4 | "remediation_policy": "safe", |
| 5 | "generate_evidence_pack": true |
| 6 | } |
| 1 | { |
| 2 | "validationRef": "val_8f2a3b", |
| 3 | "originalValid": false, |
| 4 | "fixedValid": true, |
| 5 | "engine": "hybrid", |
| 6 | "fixesApplied": 1, |
| 7 | "fixSummary": { "autoFixable": 1, "needsInput": 0, "blocked": 0 }, |
| 8 | "evidencePackUrl": "/api/v1/evidence-pack/ep_...", |
| 9 | "_links": { "self": "/api/v2/validate-and-fix" } |
| 10 | } |
No hidden transformations. No silent rewrites.
View API DocumentationNot a Validator
What validators do
What Invoice Navigator does
Show you a list of errors
Classify, remediate, revalidate, and prove compliance
Stop at "invalid"
Fix what's safe, ask for what's missing, block what's financial
Return a report
Return a remediated invoice + structured evidence pack
Run manually or via CLI
Run in your pipeline via a single REST endpoint
See the full breakdown on the comparison page
Priced for Production Pipelines
Starter
€249/mo
Up to 1,000 invoices/mo
1,000 invoices/mo · 30-day retention · Email support
Pro
€499/mo
Up to 5,000 invoices/mo
5,000 invoices/mo · Batch processing · 90-day retention · Rule alerts
Scale
€999/mo
Up to 25,000 invoices/mo
25,000 invoices/mo · 1-year retention · Dedicated support · SLA targets
- —Versioned rule sets with update tracking
- —Revalidation via KoSIT for German CIUS; equivalent validation for other jurisdictions
- —Structured evidence pack per invoice
- —Clear remediation boundaries
- —Public status page
Start with 100 free invoices — full engine access, no credit card.
Integrates with your pipeline in under one sprint.
Ready to Harden Your Pipeline?
Deploy the Safety Layer and stop rejections before they reach your customers or platforms.