WordPress at a glance
action is not described

edit_user_created_user action-hook . WP 4.4.0

Fires after a new user has been created.

Usage

add_action( 'edit_user_created_user', 'action_function_name_701', 10, 2 );
function action_function_name_701( $user_id, $notify ){
	// action...
}
$user_id(int)
ID of the newly created user.
$notify(string)
Type of notification that should happen. See wp_send_new_user_notifications() for more information on possible values.

Where the hook is called

edit_user()
wp-admin/includes/user.php 211
do_action( 'edit_user_created_user', $user_id, $notify );

Where the hook is used (in WP core)

wp-includes/default-filters.php 429
add_action( 'edit_user_created_user', 'wp_send_new_user_notifications', 10, 2 );