I have set up the API for USPS. It locates the prices for domestic rates according to the Zip Code no problem, but for international rates I get the following error message if I select "Airmail Parcel Post (4-10 days International)". Also if I select the domestic rate for an international zip code it will go through but it is charging a domestic rate for an international zip code which is substantially cheaper. Any help would be greatly appreciated.
USPS module error: shipping cost not determined!
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-2147219094;RateEngineV1.ProcessRequestService must be Express, Priority, Parcel, Library, BPM, or Media; you passed Airmail1000440