After installation of this module, go to the Settings menu -> Technical ->
Database cleanup. This menu is only available to members of the *Access Rights*
group. Go through the modules, models, columns and tables
entries under this menu (in that order) and find out if there is orphaned data
in your database. You can either delete entries by line, or sweep all entries
in one big step (if you are *really* confident).

.. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
    :alt: Try me on Runbot
    :target: https://runbot.odoo-community.org/runbot/149/11.0