Current version of the mappings for the site. 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.

Contains data about categories that are mapped to characteristics sets. Use this data to determine:
- The names and IDs of the characteristics sets
- The availability of the Pre-filled Item Information feature for listings in that category (i.e., whether the category is catalog-enabled)
- For catalog-enabled categories, the available product search methods
- The current version information for the complete mapping
- The version information for each characteristics set

A list of one or more characteristics sets mapped to the category, if any. Use this information when working with Item Specifics (Attributes) and Pre-filled Item Information (Catalogs) functionality.

Contains data about categories (if any) whose characteristics set mappings have changed since the version specified in the request. When a characteristics set mapping changes, the data appears in both the UnmappedCategoryArray object (to indicate that the change occurred) and the MappedCategoryArray object.