ERROR [1008]: # (NODEID/DOFTYPE) IS ALREADY CONSTRAINED. CANNOT BE CONSTRAINED BY MULTIPOINT CONSTRAINT. 

Cause

This error is generated either when DOFs are constrained with an SPC (Single-Point Constraint) or when the DOFs, which have been already defined as dependent through an MPC (Multi-Point Constraint) or rigid body element, are re-defined as dependent DOFs.  In other words, the error is generated when additional DOFs are constrained to the dependent node or when additional MPC or rigid bodies are created.

Analysis Type 

All types of analyses

Related Menu 

Mesh >> Element >> Create >> Other >> Rigid Link...

Analysis >> Boundary >> Constraint...

Analysis >> Boundary >> Constraint Equation...

Remedy

Examine the DOFs with duplicated definitions.  Remove any additional DOFs that have been defined on a dependent DOF, and delete any additional MPC or rigid bodies.