I have created a design table for a common bolt.  The Excell column in the design table that holds the configuration name was created by a formula.  It pulls the pitch, length and size from other columns to create, for example, M5 x .8 x 20.

When I close the design table, I get "No valid design instances were found".  And nothing changes on my list of configurations.

Is it the formula that is not allowing SW to recognize the configuratino name? I do not have any other data in the DT that is not pulled from the part.  If so, is there any way around this?

Any other ideas on what is happening here?

Thanks

Robert