Denodo Express is a free version of Denodo platform and has some license limitations as compared to a full version. VCS is one of them and it is disabled in Denodo Express.
For more information, I would recommend you to refer the article, [Limitations of the Denodo Express license.](https://community.denodo.com/docs/html/browse/7.0/platform/installation/appendix/limitations_of_the_denodo_express_license/limitations_of_the_denodo_express_license)
Hope this helps!