// WPML Plugin - Get the ID of original Post
global $sitepress; // Assuming the plugin is active

$original_post_id = apply_filters(
  'wpml_object_id',
  get_the_id(),
  get_post_type(get_the_id()),
  false,
  $sitepress->get_default_language()
);

echo '$original_post_id - ' . $original_post_id;

--------------------------
// Get translated post ID
-------------------------
global $sitepress; // Assuming the plugin is active
$element_obj = get_page_by_path( 'news' );
$element_id = $element_obj->ID;
$element_type = get_post_type($element_id);

----------------------------------
// Get term id of custom taxonomy
----------------------------------
$translated_term_id = apply_filters( 'wpml_object_id', ORIGNAL_TERM_ID, 'TAXONOMY_NAME', false  );
$return_original_if_missing = true;
$ulanguage_code = ICL_LANGUAGE_CODE;

$post_id = apply_filters( 'wpml_object_id', $element_id, $element_type, $return_original_if_missing, $ulanguage_code );

echo '$post_id - ' . $post_id;