Lifecycle models are themselves governed by a predefined lifecycle model. This lifecycle model defines three states: New, Productive, and Retired.

When you initially create a lifecycle model it enters the New state. CentraSite does not begin enforcing a new lifecycle model until you activate the model by switching it to the Productive state.

After you activate a lifecycle model (that is, place it in the Productive state), that lifecycle model can no longer be modified. To make changes to the lifecycle model, you must create a new version of the model and make your changes to the new version.