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==================
Retention of files
==================
Nextcloud's Files Retention app allows to automatically delete files that
are tagged with a collaborative tag and have a certain age.
Example
-------
After installing the Retention app as described in :doc:`../apps_management`
navigate to the configuration and locate the Workflow settings.
.. figure:: images/retention_sample.png
:alt: Sample rule to delete files after 14 days.
The rule from the example will delete all files tagged with ``Temporary file`` after 14 days.
Common misconfigurations
------------------------
Public collaborative tag
^^^^^^^^^^^^^^^^^^^^^^^^
Similar to :doc:`access_control` retention should use ``restricted`` or ``invisible``
tags. Otherwise any user can remove the tag and the file is not removed after the given
period. Use :doc:`automated_tagging` to assign such tags to newly uploaded files.
File age
^^^^^^^^
Currently retention is based on the creation date of the file. The sync client sends
the **original** creation date to the server, while uploading through the web interface
will create a new file with a **new** creation date.
We hope to be able to add a ``upload date`` to the filesystem soon, which would make more
sense. Until then this potentially unexpected behavior has to be taken into account.