The procedures for planned outages of storage systems in a GAD+UR pair assume that you have completed creating the target UR pair (see Creating the target UR pair). If you are in a subsequent migration procedure after creating the target UR pair, complete that migration procedure and then perform planned outages of the source storage system and the target storage system separately.
If you have not completed creating the target UR pair, skip the procedures for planned outages for a pair that does not exist in your configuration.