Hi @YasaswiP 

Why you have removed other column from list view . Only ask was to remove 

"Select the Personalize List (gear) icon to remove the "Opened" and "Updated by" columns."

In list view ->click on gear icon,

Column should be Number, short description, caller, priority,state, category, assignment group,assigned to , updated,

Once all loaded, share the screen shot.

Refer: https://www.servicenow.com/community/training-and-certifications/lists-and-filters-task/m-p/3485716?...