Failed to disable the mailbox {0} due to a conflict in directory settings. To disable this mailbox, first run Enable-RemoteMailbox ...

Failed to disable the mailbox {0} due to a conflict in directory settings. To disable this mailbox, first run Enable-RemoteMailbox on-premises. After the next Dirsync sync cycle, run Disable-RemoteMailbox on-premises to disable this mailbox in the datacenter.