Odoo – Fakturownia Integration Setup

This guide explains how to configure the Odoo–Fakturownia integration module.

The module synchronizes invoices created in Odoo with Fakturownia and optionally submits them to the Krajowy System e-Faktur (KSeF).

This module is free - get it from the Odoo App Store(opens in new tab)

Once configured:

invoices created in Odoo are automatically transferred to Fakturownia
invoices can optionally be submitted to KSeF
manual invoice entry is no longer required

Requirements

Before starting the configuration, make sure you have:

an active Fakturownia account
KSeF authorization enabled (if you plan to send invoices to KSeF)
the Odoo–Fakturownia integration module installed in Odoo

Step 1 — Get Your Fakturownia Account URL

Log in to Fakturownia
Open Settings
Click Account settings
Find the Account name

Your account URL will look like https://your_company.fakturownia.pl

You will need this value during the Odoo configuration.

Step 2 — Generate an API Key in Fakturownia

Open Settings
Click API
Click Show
Add a new API token
Name it for example Odoo
Save the token
Copy the generated API token This key allows Odoo to communicate with your Fakturownia account.

Step 3 — Configure the Integration in Odoo

In Odoo:

Navigate to Invoicing / Accounting → Configuration → Settings
Scroll to the Fakturownia section and configure the following fields.

API Key

Paste the API token created in Fakturownia.

Account URL

Paste your account URL, for example https://your_company.fakturownia.pl

Automatic Synchronization

Enable this option if you want invoices to be sent automatically when they are posted in Odoo.

Step 4 — Choose Invoice Number Source

The module allows you to decide which system controls invoice numbering.

Option 1 — Odoo

Odoo generates invoice numbers and sends them to Fakturownia.

Option 2 — Fakturownia

Fakturownia generates invoice numbers and synchronizes them back to Odoo.

Choose the option that best matches your accounting workflow.

Sending Invoices to KSeF

Each invoice in Odoo includes the option Send to KSeF immediately

Important details:

invoices are sent to KSeF only if this option is selected
the option is disabled by default

This allows users to control which invoices are transmitted to the national system.

Activate KSeF in Fakturownia

To enable KSeF:

Go to Settings → Integrations and Add-ons
Locate KSeF and click Activate
Authenticate using one of the supported methods:

qualified electronic signature
trusted profile
token

Upload the required certificates
Authorize your VAT ID (NIP)
Choose sending mode (automatic or manual)

After activation, invoices sent from Odoo through Fakturownia can be submitted to KSeF.

How the Synchronization Works

After configuration:

An invoice is created in Odoo
The invoice is posted
The invoice is automatically sent to Fakturownia
If the KSeF option is enabled, the invoice is submitted to KSeF

Troubleshooting

Invoice not appearing in Fakturownia

Check that:

the API key is correct
the account URL is correct
the invoice has been posted
automatic synchronization is enabled

KSeF submission not working

Verify that:

KSeF is activated in Fakturownia
authentication certificates are uploaded
the invoice has Send to KSeF immediately enabled

Need Help with Odoo or KSeF Integration?

Setting up ERP integrations and accounting workflows can sometimes require customization.

The Cetmix team specializes in Odoo engineering, including:

Odoo implementations and migrations
custom module development
integrations with accounting systems
infrastructure and DevOps for Odoo

If you need help with Odoo, Fakturownia, or KSeF, feel free to reach out.

👉 Got questions? Talk to us