When using PHP toolkit to create an Estimate, I got this error: "Could not calculate cost for the selected Realtime rate. Missing/Illegal ShipTo/Address/StateProvinceCode" How to remove address validation in the php script? I set preferences

$service->setPreferences(false, true, true, true);

choose a different shipping method

I know it's because illegal shipping address. So I need to ignore the verification by using php code itself.