Synopsis:
The error shows up in the Shipping Method Page on the Checkout Process in the webstore:
UPS Worldwide Expedited (HardError:[111210] The requested service is unavailable between the selected locations..)UPS Worldwide Express (HardError:[111210] The requested service is unavailable between the selected locations..)
UPS Worldwide Express Plus (HardError:[111210] The requested service is unavailable between the selected locations..)
UPS Express Saver (HardError:[111100] The requested service is invalid from the selected origin..)
Solution:
Go to eCommerce Module > Setup > Application Configuration > Search for ShowShippingMethodError and set it to false
Applicable Products:
Interprise 6.0.4.19 and up