Hi All, Can we add client script to validate field when user input the value thru inline editing ? or is there any other way to do validation on inline editing?

No, inline editing would not trigger Client Scripts, all you can do is to validate those with an UserEvent Script and it is tricky. Only the modify value would be present in the XEDIT event triggered by the inline edit.

so i throw error in userevent if the input is not valid ?

yes throw an error