how to file rectification

Radhika Ajmera (CA IN practice) (163 Points)

04 October 2018  
I filled return for ay 2018-19 with relief claim u/s 89 and also filled form 10 E online perfectly matched with past year data available in 26 As and all pervious years return but cpc not consider relief u/s 89 and issue demand notice.
now I want to file rectification for the same which option to be selected so that relief u/s 89 is taken in processing.