Minor Description
When a client tries to retrieve multiple rows using REST API, even if one of the specified rows does not exist, 404 is returned. The correct way should be to return the result for the found rows and ignore the non-existent ones. Also, in the current code base, only some exceptions are handled, if some exception like Access denied or no column found exception is throws by the APIs, 500 ( server not found) is returned to user. This is leaves the end user wondering what caused the rest command to fail.