I am trying to use the Pareto Plot Platform to perform per unit analysis.
I've tried to set up my data in the same structure as what I find in the example: Help > Sample Data Folder and open Quality Control/Failuressize.jmp
I've followed the example instructions in "Example of a Non-Constant Sample Size across Groups" I'm successfully using the sample data and get results as expected.
When I try this same setup and method using my own data I'm not successful and receive an error message

I'm using JMP17.
What does the error message describe? I've checked the column properties of the JMP example data and my own data have the same column properties. Please advise.