how to set mandatory fields in abap webdynpro

Hi Experts.

how to set mandatory fields in abap webdynpro.

I have set of 5 fields in my view. Changed the property of input field. State-> Required .  to all fields.

If value is not entered in any of the field, output is as per the expectations.

If value is entered in any one field and click on save, then it is saving without asking to enter value in other required fields..

Please suggest.