Matrix that shows compatibility between Windchill REST Services (WRS) and Windchill releases. For WRS 2.2 and later, use the Release Advisor to check compatibility between Windchill and WRS releases: www.ptc.com/en/support/release-advisor. (Note: Starting from Windchill r13.0.2.0, WRS is integrated with Windchill and follows the same release number.)