[K]

Hi Yogesh,

You can use "showToast" out-of-box event.

 

var showToastMsg=$A.get("e.force.showToast");

showToastMsg.setParams({

message : "Your error message" ,

type : "error"

});

showToastMsg.fire();

 

 

if you want you can pass dynamic params to message.

 

Thanks

Srinivas