Import error - Record is incorrect because it has more or less data than the column count

Summary:

I am trying to import and modify existing data into a live data table in CPQ

I have exported the data from the table

And then only entered the value in one column that needs to be modified , kept the header and all other columns same

When i import, I get an error , "Record is incorrect because it has more or less data than the column count"

As I mentioned, I am not modifying anything else, except entering data in one column before import

To know, if my edit is causing an issue, i tried to import the same file i exported without making any changes, I still receive the error