| T2281 | FATAL ERROR: T2281 | FLUID FREE SURFACE COORDINATE SYSTEM id DOES NOT EXIST |
| Cause: | An MFLUID Bulk Data entry referenced a coordinate system that does not exist in the model database. | |
| Action: | Change reference to an existing coordinate system identification number or add the referenced coordinate system to the model. | |
| Remarks: | See Autodesk Nastran Reference Guide, Section 4, Bulk Data, for entry format. |