ansys (classic) error message

[Arturo79]

Good morning, everyone.
during static analysis of a simple model, the following error message appears:
"large negative pivot value (1.225...e-5) in eqn.system. may be because of a bad temperature-dependent material property used in th model".

I've never happened, does anyone know what this is about?

 

[stefano.garbin]

check if
1- the piece is well bound
2- the mesh is made decently
3- the mechanical properties of the used materials are correct (eye to the measuring units)