A version of the mappings for the site. Typically, an application passes the version value that was returned the last time the application executed this call. Filter that causes the call to return only the categories for which the mappings have changed since the specified version. If not specified, all category-to-characteristics set mappings are returned. This value changes each time changes are made to the mappings. The current version value is not necessarily greater than the previous value. Therefore, when comparing versions, only compare whether the value has changed.
See the
Field Index to learn which calls use AttributeSystemVersion.
