Form 1a-certification

Dear friends,

Kindly advice on the following.....

From 1A on the MCA site if certified by a practicing cs can be filed with just one proposed company name.

Is it mandatory to provide other such names maybe 4-5 if not certified by practising professional?

Practically if we file form 1A with just one propsed name entered and without certification by a practicing professional, can it be a ground for ROC rejection??