Code-Snippets-Functions/Execute a function on a child site/WooCommerce/change-no-longer-sold-add-to-cart-message.txt

add_filter( 'woocommerce_add_notice', 'change_woocommerce_notice' );
function change_woocommerce_notice( $message ) {
    // The partial text of the notice to find
    $partial_text = "has been removed from your basket because it can no longer be purchased. Please contact us if you need assistance.";

    if ( $message strpos( $message, $partial_text ) !== false ) {
        // Extract the product name (if you want to use it)
        $product_name = str_replace( $partial_text, '', $message );

        // Your replacement message
        $message = __("This is your replacement message", "woocommerce");
    }   
    return $message;
}