Most probably you changed the Modeling Type of a column which had some Value Order info.
In the example below, there a value order is defined for numeric height values, then the modeling type for height is changed to character.
This triggers the error message:
![hogi_0-1671527333974.png hogi_0-1671527333974.png](https://community.jmp.com/t5/image/serverpage/image-id/48505i63746969B263189E/image-size/medium?v=v2&px=400)
Open( "$SAMPLE_DATA/Big Class.jmp" );
Data Table( "Big Class" ):height << Set Property(
"Value Order",
{Custom Order(
{56, 51, 52, 55, 68, 69, 70}
), Common Order( 0 )}
);
Data Table( "Big Class" ):height << Data Type( Character ) <<
Set Modeling Type( "Nominal" );