WordPress at a glance
action is not described

woocommerce_coupon_data_panels action-hook . WC 1.0

Usage

add_action( 'woocommerce_coupon_data_panels', 'action_function_name_3670', 10, 2 );
function action_function_name_3670( $coupon_id, $coupon ){
	// action...
}
$coupon_id
-
$coupon
-

Where the hook is called

WC_Meta_Box_Coupon_Data::output()
woocommerce_coupon_data_panels
woocommerce/includes/admin/meta-boxes/class-wc-meta-box-coupon-data.php 344
<?php do_action( 'woocommerce_coupon_data_panels', $coupon->get_id(), $coupon ); ?>

Where in WP core the hook is used WooCommerce

Usage not found.