'sometimes|numeric', "member_id" => 'required|numeric', 'indicating' => '', 'type' => 'required|max:255', 'first_name_contact_person' => '', 'last_name_contact_person' => '', 'infix' => '', 'email' => 'required_if:type,==,invoice', 'phone' => '', 'address' => '', 'postal' => '', 'city' => '', 'title_contact_person' => '', 'initials_contact_person' => '', 'middle_name_contact_person' => '', 'job_title_contact_person' => '', 'house_number' => '', 'country' => '', ]; } }