abaqus做辊锻遇到了问题

warning里显示The option *boundary,type=displacement has been used; check status file between steps for warnings on any jumps prescribed across the steps in displacement values of translational dof. For rotational dof make sure that there are no such jumps. All jumps in displacements across steps are ignorederror里显示Excessive rotation of nodes in node set ErrNodeExcessRotation-Step2.
这表示是什么错误？