So we've seen intermittent 500 errors occur when making SOAP requests. In feb we had 20 errors on the 1st and 4 errors on the 4th. We tend to process about 140k SOAP requests per day. In filing a case with NetSuite to try and find cause, as the 500 error gives me no further information. Their stance is I need to update the WSDL (currently on 2015.2). Has anyone else had this issue, and if so, are you seeing it with a supported WSDL and have you found a cause?