When you deploy a Project that contains an updated document type, Control Center generates a warning. In this warning you can see the difference between the current document type in the enterprise repository and the document type you intend to deploy. You can then decide whether to continue to deploy the Project or cancel. If you deploy, the enterprise repository is updated with the new revision of the document type.
If you change the information in a document type resource in a global resource set, all Design Center Projects that contain the updated document type are affected. This means you must check out the latest revision of the document type before you deploy a Project. If you try to deploy a Project where the document type has a lower document revision than the document type stored in the enterprise repository, deployment fails.