| G3055 | FATAL ERROR: G3055 | CHECK MPC AT GRID ID1 AND GRID ID2 COMPONENT N |
| Cause: | The specified multipoint constraint equation has non-zero grid spacing without rigid body motion degrees of freedom. Use of this type of multipoint constraint equation can cause internal constraints and incorrect results. | |
| Action: | Either add rigid body motion terms to the MPC Bulk Data entry or use collocated grid points. | |
| Remarks: | See the Autodesk Nastran Solver Reference Guide, Bulk Data section for entry format. |