PRD Peppol Route Doctor Belgium-first delivery diagnosis
Issue page

Odoo Peppol invalid signature for request

An invalid request signature is usually a provider credential or environment problem, especially after database copies or restores.

Access-point authentication failure Belgium-first Self-serve remediation
Symptoms

What this usually looks like

Invalid signature for requestPeppol settings broken after restoreCannot unregister or reconnect cleanly
Likely cause

What is usually actually broken

The access-point keys or environment state are out of sync with the current Odoo instance.

Next steps

Do these before you resend

  1. Do not retry sends until the connection is healthy again.
  2. Re-authorize the access point and compare environment credentials.
  3. Document the exact error and database history before contacting support.

The fastest path from this page is a prefilled diagnosis. It opens the analyzer with this exact issue pattern already loaded and immediately prepares the EUR 9 fix-pack preview when the route looks blocked or risky.

Open prefilled diagnosis See the fix pack
Direct help

Buy the rescue kit for this exact issue

If this page matches the exact blocker, you can unlock the issue-specific rescue kit directly without running the analyzer first.

FAQ

What people ask right before they get blocked

Is this a routing problem?

Usually not. This error normally appears before the network even accepts the request.

What changed most often before this shows up?

Database restores, environment cloning, or expired provider credentials are common triggers.

Operator guides

Go one level deeper before you resend

Odoo Peppol triage for Belgium

A calm, ordered checklist for Belgian Odoo users when Peppol starts failing without a clear explanation.

Read the guide
When to resend a Peppol invoice and when to escalate

A fast decision guide for operators who need to know whether the next step is a resend, a partner-record fix, or a provider ticket.

Read the guide
Related issues

Similar failure patterns worth checking

Odoo Error 201: 'Your company is already registered on another Access Point' and sender-only fallback

This exact Odoo Peppol message usually appears after a restore, duplicate database, or half-reset receiving setup. The result is a blocked receiving registration and a sender-only fallback that still does not restore the real workflow.

Open issue page
Odoo Peppol broke after a database restore or clone

Restores and cloned environments often leave Odoo Peppol bindings out of sync. This page isolates the exact symptoms that usually follow and how to recover cleanly.

Open issue page
Odoo Peppol is using the wrong company binding

Multi-company setups, duplicates, and restored databases can leave Odoo pointing at the wrong Belgian participant even when the invoice itself looks fine.

Open issue page