**Inheritance:**
java.lang.Object, java.lang.Throwable, java.lang.Exception, java.lang.RuntimeException, com.aspose.ms.System.Exception, com.aspose.ms.System.ApplicationException, [com.aspose.tasks.TasksException](../../com.aspose.tasks/tasksexception)
```
public class ProjectOnlineException extends TasksException
```

Represents an exception which is thrown when errors are found during interaction with Project Online or Project Server instance.