Ticket #15741: 15741.diff

wp-includes/taxonomy.php

@@ -1871 +1871 @@
                         // Hierarchical, and it matches an existing term, Do not allow same "name" in the same level.
                         $siblings = get_terms($taxonomy, array('fields' => 'names', 'get' => 'all', 'parent' => (int)$parent) );
                         if ( in_array($name, $siblings) ) {
-                                return new WP_Error('term_exists', __('A term with the name provided already exists with this parent.'), $exists['term_id']);
+                                return new WP_Error('term_exists', __('A term with the slug provided already exists with this parent.'), $exists['term_id']);
                         } else {
                                 $slug = wp_unique_term_slug($slug, (object) $args);
                                 if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) )