Exclude taxonomy when URI is duplicated

function bis_duplicated_uri($element_id, $uri_parts, $request_url) {
    global $permalink_manager_uris, $wpdb;

    if(isset($_GET['test']) && !empty($uri_parts['uri'])) {
        // Get detected URI
        $uri = $uri_parts['uri'];

        // Check if URI is used more than once
        $duplicates = array_keys($permalink_manager_uris, $uri);

        if(!empty($duplicates) && count($duplicates) > 1) {
            $duplicates = array_map(function($value) { return str_replace('tax-', '', $value); }, $duplicates);
            $term_ids = implode(", ", $duplicates);

            // Exclude the post categories
            $new_term_id = $wpdb->get_var("SELECT term_id FROM {$wpdb->term_taxonomy} AS tt WHERE tt.taxonomy != 'category' AND term_ID IN ({$term_ids}) ORDER BY term_id DESC LIMIT 1");
        }
    }

    return (!empty($new_term_id))? "tax-{$new_term_id}" : $element_id;
}
add_filter('permalink_manager_detected_element_id', 'bis_duplicated_uri', 10, 3);