After the class has been defined - by defining all attributes, derivations, validations, error messages, etc, and after saving all of those - you need to build or rebuild the process for the class.

The process is essentially a set of subroutines or functions, that contain all the business logic associated with the class.

Every time a change is made to a class, the process needs to be recompiled or rebuilt.

The Compile Result field shows the current status of the Class, which may be that the process is waiting to be rebuilt, or may be that the process has been compiled successfully.

The Compile Result field will show 'Waiting to be rebuilt' if the class is currently waiting to be rebuilt. If the process has been successfully rebuilt, the Compile Result field will show success compilation messages.

If you have not selected File - Save since your last change, select it now. The system will display a 'Waiting to be rebuilt' message. Then select Utilities - (Re)build Process.

After the process rebuild has finished, successful compilation messages will be displayed in 'Compile Result' field. This may take up to 10 seconds, depending on the operating system and database you are running on, and depending of course on the complexity of the class definition.

Please note that processes can be rebuilt from either the System or the Class page. Rebuilding processes from the System page, will cause all processes for the system on display to be rebuilt. Rebuilding processes from the Class page, will cause the current process for the class on display to be rebuilt.