Develop > Controller layer > Management Center Web application > Customize the Management Center Web application
Extend existing objects
You can customize objects, actions, and error messages in the Management Center Web application.
To customize existing Management Center objects and error messages, identify the problem and the objects that to customize, and then perform one or more of the following actions:
- Add data to an existing Management Center object
Use the UserData element to add data to an existing Management Center object.
- Ovveride a retrieve service for a Management Center object
To override an existing retrieve service, create a new controller JSP page and a new Struts action forward.
- Ovveride a process service for a Management Center object
You can override a process service by creating a modified Struts configuration in the struts-extension.xml file.
- Ovveride an existing validation error message
Changing the validation message returned to the Management Center involves adding a new property to an alternative resource bundle. The alternate resource bundle declares the resource bundle that contains the customized version of existing validation messages.