I am using nopcommerce 3.5. I have added plugin of UPS of TransitInTime and Rate API. I want to get rates by calling UPS Rate API. I want all Rates in dropdown on page load.
I have resolved this questions. So If you face this kind of problem don't forget to use
String[] requestOption = { "Shop" };
in place of
String[] requestOption = { "Rate" };
Then you will get rates for all shipping options.