I am modelling a relief-shelf retaining wall in Abaqus software after applying all the interactions and boundary conditions while doing data check it is showing - "7 nodes have dof on which velocity/displacement/acceleration/base motion etc. constraints are specified simultaneously. The nodes have been identified in node set ErrNodeBCRedundantDof." Can someone tell what to do next to find the solution for this as I am still in initial phase of learning this software.