Code-Snippets-Functions/Execute a function on a child site/WooCommerce/exclude-product-from-discount-coupons.txt

add_filter( 'woocommerce_coupon_is_valid_for_product', 'wc_exclude_product_from_product_promotions_frontend', 9999, 4 );
 
function wc_exclude_product_from_product_promotions_frontend( $valid, $product, $coupon, $values ) {
   // PRODUCT ID HERE (E.G. 12345)
   if ( 12345 == $product->get_id() ) {
      $valid = false;
   }
   return $valid;
}