I've been receiving a lot of Error 10007 responses lately with using the AddItem call. When this happens, my application attempts submit the same request a few seconds later, and the request usually succeeds the second time.
The LongMessage for the error response reads "Internal error to the application," which suggests that it's a problem on eBay's servers. However, this page suggests that these error responses could also be the result of some faulty input:
Are there any other undocumented factors that might be causing these error responses, and is there anything we can do to prevent them from occuring?