Synopsis
When using real-time shipping you can prevent certain methods from displaying on the shipping options page. This prevents your customers from choosing shipping methods that may be considered valid by the carrier based on weight and address, but would be inappropriate for your products.
Procedure
To prevent a shipping method, you must enter the exact shipping method name in the “RTShipping.ShippingMethodsToPrevent” AppConfig parameter, however there is a special consideration for USPS shipping methods. In order to prevent a USPS method you must prepend “U.S. Postal” to the method name.
For example, if you wish to prevent a method called “Global Priority Mail” from displaying on the shipping selection lists, you would enter “U.S. Postal Global Priority Mail” in your RTShipping.ShippingMethodsToPrevent AppConfig.
NOTE:This information applies to all 7x versions, 8x versions up to 8.0.1.2, and 9x versions through 9.0.1.3. Later versions
do not need the 'U.S. Postal' before method names.