# Versions

> Business Plan keeps saved revisions of every model and plan, up to 40 each, and lets you restore an earlier one as a new revision.

Source: https://bizplan.geenius.io/docs/versions/

Every write keeps a revision: **40** per model and per plan. List them, and **restore** an earlier one; the restore is saved as a new revision, so it can itself be undone. An edit can name the revision it read, so two writers do not overwrite each other.