WooCommerce Product API (Create product)

function pm_set_custom_permalink($product_id) {
    global $permalink_manager_uris;

    if(!empty($permalink_manager_uris) && empty($permalink_manager_uris[$product_id])) {
        $default_uri = Permalink_Manager_URI_Functions_Post::get_default_post_uri($product_id);

        if($default_uri) {
            Permalink_Manager_URI_Functions::save_single_uri($product_id, $default_uri, false, true);
        }
    }
}
add_action('woocommerce_api_create_product', 'pm_set_custom_permalink', 100);