Add custom admin notice

Hi,
I need to checking some WC setting field has value,if is empty it will show notice in woocommerce admin setting page.

So, I trying to use “add_custom_notice”, but it will show an error:

Call to undefined function add_custom_notice()…

function test_notice() {
	add_custom_notice( _test, $notice_html );
	$notice_html = ("<h1>123</h1>");
}
add_action( 'woocommerce_init', 'test_notice' );

BTW,I create the plugin for this code and I’m not sure what the hook to use.