.. _over_constrained_volumes_page:
************************
Over-constrained volumes
This mesh quality control highlights volumes sharing only one border with other volumes.
.. note::
The highlighted volumes are actually over-constrained only if, at the computation time, the boundary conditions on the borders where the nodes are located are all Dirichlet boundary conditions.
.. image:: ../images/over_constrained_volumes.png
:align: center
.. centered::
Over-constrained volume is displayed in red.
**See Also** a sample TUI Script of a :ref:`tui_over_constrained_volumes` filter.
