root@dc01:~# samba-tool domain demote -UAdministrator
Using pdc.fisherthompson.local as partner server for the demotion
Password for [FISHERTHOMPSON\Administrator]:
Deactivating inbound replication
Asking partner server pdc.fisherthompson.local to synchronize from us
Error while demoting, re-enabling inbound replication
ERROR(<type 'exceptions.RuntimeError'>): Error while sending a DsReplicaSync for partion DC=fisherthompson,DC=local - (8440, 'WERR_DS_DRA_BAD_NC')
  File "/usr/local/samba/lib/python2.7/site-packages/samba/netcmd/domain.py", line 786, in run
    drsuapiBind.DsReplicaSync(drsuapi_handle, 1, req1)
root@dc01:~#