How to import model profile and goals using spreadsheet templates?

Summary

How to import model profile and goals using spreadsheet templates?

Content

Hello everybody,

I want to import model profiles and goals in HCM using spreadsheet Data Loader. I created templates for both the business objects but every time I import and load them, the process fails. It shows me this error: "The line for component {DISCRIM} with instruction {INSTR} doesn't include values that define a unique reference to the record". Can anybody help me? Do I need to add other columns? Is it easier to use the .dat file for importing data? 

Thanks