Is there a way to remove required fields from customer search screen?.I want to make Telephone No as mandatory field and remove all other fields as mandatory from form.
any help on this will be highly appreciated.
Well, you should read about CONSTRAINTS.
You will get some information here:
The way you told us, it looks like you want to remove all constraints, and add a not null constraint to a Telephone Number field.
Well, good reading, and hope it helps.