Forbid modifications of present entities and simplify their synchronization
In ideal preset entities should exactly correspond to the ones that are in the latest version of the repository. But this can not be easily achieved, in particular this can not be solved automatically. For instance, there may be children verification jobs and tags of the preset ones. So, even when they are removed from the repository, they can not be removed from a database (I suggest to mark them so that managers will easily see these entities and will be able to remove them).