Data Set:

I have above data set and I want to identify companies with no changes in the values over the period i.e KBC and . So that I can remove them from my dataset. Basically, I'm running linear regression model and trying to predict future values based on variable. batch macro is throwing an error for companies where no changes are observed as variable changes. Error: "The field "Fit_Stats" is not contained in the record". Can someone help me how can I remove such companies from my dataset.