xxxxxxxxxx
add_filter( 'woocommerce_coupon_is_valid_for_product', 'quadlayers_exclude_product_from_product_promotions', 9999, 4 );
function quadlayers_exclude_product_from_product_promotions( $valid, $product, $coupon, $values ) {
// REPLACE THE PRODUCT ID (E.G. 145)
if ( PRODUCT_ID == $product->get_id() ) {
$valid = false;
}
return $valid;
}