Submit Failure Message when Press enter

Submit Failure Message when Press enter

I have a form that will get data from zoho crm.

My problem is when press enter, it will show the error message, All i need is to disappear that message only,




if (input.Email  !=  "")
{
    vSearch = "(Email|=|" + input.Email + ")";
    crmRes = zoho.crm.searchRecords(" Contacts", vSearch, 1, 1);
    if (crmRes.size()  >  0)
    {
        fa = crmRes.get(0);
        input.FranchiseApplicantsID = fa.get("CONTACTID");
        input.First_Name = fa.get("First Name");
        input.Last_Name = fa.get("Last Name");
        input.Phone = fa.get("Phone");
        input.Street = fa.get("Mailing Street");
        input.City = fa.get("Mailing City");
        show First_Name;
        show Last_Name;
        show Phone;
        show Street;
        show City;
        show Choice_list_of_preferred_ locations;
        show plainMsg;
    }
    else
    {
        alert("No Information Found, Please check with Seva!\n Email:  franchising@sevabeauty.com");
    }
}
else
{
    alert("Please enter a Email address!");
    hide First_Name;
    hide Last_Name;
    hide Phone;
    hide Street;
    hide City;
    hide Choice_list_of_preferred_ locations;
    hide plainMsg;
}