A model revision can be outdated for two reasons:
In other words, the outdated [in development] model revision cannot be recreated exactly as it is in the current state.
Note
Not all changes in a Data Backbone will result in outdated models. Additions to the Data Definition component of a Data Backbone can be made without consequences. Deleting, renaming or moving elements in the Data Definition component will outdate the models based on this Data Backbone upon creating the Data Backbone. Any changes to the Data Retrieval component of the Data Backbone will also not result in outdated models.
Creating the ITP Model revision will make it up to date again, reflecting the changes to the Data Backbone revision or the document revision(s).
Note
During development this situation may occur quite often, in this situation the clock functions as a reminder to re-create the ITP Model.