Hello,
so the question is, how do we get those LTL rates to come back from UPS?
The only thing that the UPS shipping plugin is doing is :
- Sending details about your order shipping address and product weight/dimensions
- If an LTL shipping services is enable, then it will also allow you to send them information about heavy products instead of directly displaying an error message.
However instead of returning LTL rates, UPS just returned that error message, so the best solution will probably be to :
- Use the "Debug" mode option of your UPS shipping configuration page to see what's sent to and returned from the UPS shipping platform through the HTML code of your checkout workflow (pressing F12 will do the job).
- Directly contact UPS to have more information about it.