I want to run my UMAT-subroutine with XFEM in ABAQUS, but I get an error such as:

"THE PENALTY STIFFNESS HAS TO BE PROVIDED BY USING *SURFACE

BEHAVIOR, PRESSURE-OVERCLOSURE=LINEAR OR *SURFACE BEHAVIOR, AUGMENTED LAGRANGE WHEN USER MATERIAL IS USED FOR A CRACK PROPAGATION ANALYSIS WITH XFEM"

Is that anybody has experienced before?

Thanks in advance for your replies.