Odoo has released Veri*Factu for Odoo 17.0 and 18.0 - see https://www.odoo.com/es/blog/business-hacks-1/verifactu-system-in-spain-1464

How does it work in Odoo?

1. Install the Veri*Factu module from Applications.
2. Configure the Veri*Factu certificate from the certificates section in the Accounting application.
3. Create an invoice for a customer and Odoo will take care of the rest. You can see the status of the invoice in the Veri*Factu section, and you will find the QR code in the generated PDF.

Hi,

The Verifactu module is not yet officially released in the OCA/l10n-spain GitHub repository. However, there are some open issues and discussions related to Verifactu, indicating that development or planning is underway.

You can view those discussions here:

https://github.com/OCA/l10n-spain/issues?q=verifactu

Because of this, the module is not yet available for installation, but it may be added soon as compliance deadlines approach.

Recommendation:

Monitor the OCA/l10n-spain repo for future updates. Once available, it will likely be named something like l10n_es_verifactu.

Hope it helps.