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According to the documentation, a seller can offer up to 3 domestic shipping services.
I put 3 shipping services in my AddItem call, and the call returns me the item number with no errors or warnings.
However, the ViewItem page only shows the first shipping service ... what is going on?
The problem is either the Version (Compatibility Level) you have indicated in your request is too old, or some of the shipping services may not be available to the site from which you are viewing the item.