regions

If RegionLinkingMode is ALL_REGIONS_EXCEPT_SPECIFIED, then this is a space-separated list of Regions that don't replicate and send findings to the home Region.

If RegionLinkingMode is SPECIFIED_REGIONS, then this is a space-separated list of Regions that do replicate and send findings to the home Region.

An InvalidInputException error results if you populate this field while RegionLinkingMode is NO_REGIONS.