$params['contact_type_b']['api.required'] = 1;
$params['name_a_b']['api.required'] = 1;
$params['name_b_a']['api.required'] = 1;
$params['contact_type_b']['api.required'] = 1;
$params['name_a_b']['api.required'] = 1;
$params['name_b_a']['api.required'] = 1;