woocommerce_update_coupon action-hook . WC 1.0

Usage

add_action( 'woocommerce_update_coupon', 'action_function_name_3188' );
function action_function_name_3188( $id ){
	// action...
}

$id

-

Where the hook is called

do_action( 'woocommerce_update_coupon', $id );

do_action( 'woocommerce_update_coupon', $id );

do_action( 'woocommerce_update_coupon', $coupon->get_id(), $coupon );

Where in WP core the hook is used WooCommerce