WordPress at a glance
action is not described

woocommerce_admin_order_data_after_billing_address action-hook . WC 1.0

Usage

add_action( 'woocommerce_admin_order_data_after_billing_address', 'action_function_name_1856' );
function action_function_name_1856( $order ){
	// action...
}
$order
-

Where the hook is called

WC_Meta_Box_Order_Data::output()
woocommerce_admin_order_data_after_billing_address
woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-data.php 428
<?php do_action( 'woocommerce_admin_order_data_after_billing_address', $order ); ?>

Where in WP core the hook is used WooCommerce

Usage not found.