.. _Modify_DeleteAllPropertyValuesAcrossAssetCollections:

Modify > Delete all Property Values across Asset Collections
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This feature is available from the :ref:`ModifyMenu` for a selected property declaration in Ontologies.
It can be used to delete all values of that property across all asset collections that the current
user has edit permissions for.

.. tip::
   This operation is recommended when you plan to delete a property declaration and the property is already
   used elsewhere.


**See Also**

* :ref:`Modify_ChangeDatatypeAcrossGraphs`

**Further Reading on Modify Menu**

* :ref:`scripting_actions`

**Further Reading on TopBraid**

* :ref:`introduction`