How to Update Multiple Dialpeers via Import

I created about 10 Dialpeers and simply want to change the rates.
I tried downloading as CSV file, modifying the rates, and importing back with “only update”

I noticed that the existing dialpeers still did not change from the old value. Please how do I modify dialpeer rates in batch?

You have to “Apply Unique columns” to define how imported data should be matched with existing dialpeers

Thanks for your response Dmitry.
But to apply unique column, will I need to use a script for this?
Cos I downloaded the dialpeer csv, and the ID is a unique column. I uploaded with the ID but does’t seem to work.

So please, how do I apply unique columns?