Validate form issue in Portal

Hi Champs,

I have a portal having milestone section. I have a landing page and once user click the "Start Application button" in landing page, the milestone starts. In each of the page, I have a option to proceed next, back and cancel button. There are some mandatory fields in each of the pages without which the page won't proceed ahead and gives the validation message. It's working fine; but there is one issue. When I am cancelling the form, it's coming back to landing page and then when I am clicking next, automatically it's showing the mandatory field validation without even user clicking the next button.

How can I reset it, so that it will only show the message when user click the next button only.

Regards,

Ghanashyam