T2075

T2075 FATAL ERROR: T2075 OPTION IN FIELD field REQUIRES UNITS TO BE DEFINED
Cause: An option was selected on a Bulk Data entry which requires PARAM, UNITS to be specified, defining the units used in the model.
Action: Define the model units using PARAM, UNITS.
Remarks: See Autodesk Nastran Reference Guide, Section 4, Bulk Data, for entry format, and Section 5, Parameters, for more information on the UNITS parameter.