Hi @Devendra_Bhardwaj ,
Can you check the variable/argument passed to the read range activity has values?
No sir I does have any value…
Any of your variables in you read range activity is getting a null value, please check and ensure that before read you have assign the proper value in your variables, you can also post screenshots from your activity so maybe we can help better
Also debug your process, there you can check which of your variables is taking null value
Regards
The Error comes only when one of the variable that you are using null.
Now to check use log message or run in debug mode and when error comes open locals panel from the left and check the variable values to see which variable is null
Hope this helps
Cheers