ErrorCode:10019
eBay ShortMessage:Inconsistent shipping parameters.
LongMessage:One or more parameter values in the input request are invalid. Check the response for ErrorParameters elements to determine which parameters have invalid values. Correct these values, and then resend the input request.
Problem: (various)
--Flat Rate and expedited shipping are used in the same shipping option, domestic or International, You can have a flat rate in Domestic and a calculated in International but not both in the same.
--Price filled out for flat rate in a calculated shipping option
--Local Pickup is not set to Free Shipping
Solution:
Change the shipping option and update item