BC in assembly mode

hello,

idk but i am getting an error in running the simulation. I am getting a warning saying: "MUMPS allocation factor increased to 1.44". What does it mean? is it due to the insufficient BC? I am working on joule heating interface. At the boundaries, which are in contact, I have set also the boundary conditions for the continuity of electric flux and heat flux. Where is the problem?

I would be grateful for any kind help.

Regards,