Incompatible Change

All the following types of change are classed as incompatible changes:

• Adding new optional field

• Making a mandatory field optional

• Adding a new option to an enumeration field

• Removing any constraint

• Adding a new field to a complex field

If a content item is open for editing in CUE when an incompatible change is made to its content type, then when the user saves his changes, a message is displayed stating that the content type has changed in an incompatible way. When the user clicks OK, the change is saved in the usual way but the editor tab is then immediately closed and reopened, incorporating the content type change. The user can then continue editing with the content type change in effect.