| E5013 | WARNING: E5013 | NO CONSTRAINT SET SPECIFIED |
| Cause: | There was no constraint set specified in the Case Control Section. | |
| Action: | If you are specifying constraints in field 8 of the GRID entry, you can ignore this message. Otherwise, you will need to constrain your model by specifying an SPC Case Control command that references an SPC or SPC1 Bulk Data entry. | |
| Remarks: | See Autodesk Nastran Reference Guide, Section 3, Case Control, for command format, and Section 4, Bulk Data, for entry format. |