function acf_load_my_load_cat($value, $post_id, $field){

$args = array( 'taxonomy' => 'ville_formation');
$post_categories = wp_get_post_terms( get_the_ID(), 'ville_formation', array("fields" => "ids") );


if ( !empty( $post_categories ) ) {
  $args['exclude'] = $post_categories;
};

$categories = get_terms( $args );

$value=array();

  if (empty($value)) {
    // this repeater do not already has a value, change it
    foreach (  $categories as $category ) {
        $value [] =  array(
            'field_5cd186302ef1c' => $category->name);
   }

    };

return $value;
};
add_filter('acf/load_value/name=villes_a_ajouter_III', 'acf_load_my_load_cat', 10, 3);

function acf_load_my_load_cat($value, $post_id, $field){

$args = array( 'taxonomy' => 'ville_formation');
$post_categories = wp_get_post_terms( get_the_ID(), 'ville_formation', array("fields" => "ids") );


if ( !empty( $post_categories ) ) {
  $args['exclude'] = $post_categories;
};

$categories = get_terms( $args );

$value=array();

  if (empty($value)) {
    // this repeater do not already has a value, change it
    foreach (  $categories as $category ) {
        $value [] =  array(
            'field_5cd186302ef1c' => $category->name);
   }

    };
return $value;
};
add_filter('acf/load_value/name=villes_a_ajouter_III', 'acf_load_my_load_cat', 10, 3);