Fix marker display issue in conflicting countries having same zipcodes

gistfile1.txt

add_filter('wdap_exclude_countries','excluding_countries');
function excluding_countries($countries) {
 /*Return array of country codes which you want to exclude to display marker. Some countries have same zipcodes due to which markers are displayed on both countries and this represent product delivery area, however you need to display it in only one country as your deliver in one country only */
  return $countries;
}