The Client Object API defines server-side and client-side exceptions.
Server-Side Exceptions
A server-side exception occurs when a client tries to update or create a record and the Unwired Server throws an exception.
HTTP Error Codes
Unwired Server examines the EIS code received in a server response message and maps it to a logical HTTP error code, if a corresponding error code exists. If no corresponding code exists, the 500 code is assigned to signify either a Sybase Unwired Platform internal error, or an unrecognized EIS error. The EIS code and HTTP error code values are stored in log records.