A list of application-level errors or warnings (if any) that were raised when eBay processed the request.
Application-level errors occur due to problems with business-level data on the client side or on the eBay server side. For example, an error would occur if the request contains an invalid combination of fields, or it is missing a required field, or the value of the field is not recognized. An error could also occur if eBay encountered a problem in our internal business logic while processing the request.
Only returned if there were warnings or errors.