T2051

T2051 FATAL ERROR: T2051 UNABLE TO GENERATE WELD ELEMENT END POINTS
Cause: A CWELD Bulk Data entry was specified with either the ELEMID or GRIDID options and end grid points GA and GB blank. Automatic generation of the element end grid points failed.
Action: Correct the Bulk Data entry by verifying the connection elements (FTYPE = ELEMID) or connection grid points (FTYPE = GRIDID).
Remarks: See Autodesk Nastran Reference Guide, Section 4, Bulk Data, for entry format.