Site or Service Name:
Fri Sep 28 2018 11:00:03 GMT-0700 (-07)
GetOrders might fail with Internal Error to Application when the X-EBAY-API-SITEID request header sets to 0
We are aware of this issue anr actively working to get this issue resolved.
You can make the GetOrders API call against SiteID 3 (X-EBAY-API-SITEID=3) or any other international SiteID to retrieve Orders