[Action] Lock a version of your model and assign a version flag [Related Topics] Versions (Master Data Services) How to: Lock a Version (Master Data Services) How to: Create a Version Flag (Master Data Services) [Details] 
Lock a version of your model to prevent changes to the members, except by administrators. When the version's data has validated successfully against business rules, you can commit the version, which prevents changes to members by all users. Create and assign a version flag to the model. Flags help users and subscribing systems identify which version of a model to use.