Dear Gary/Patrick
following is the result
Replication Summary Start Time: 2021-10-10 12:02:49
Beginning data collection for replication summary, this may take awhile:
......
Source DSA largest delta fails/total %% error
NEWSITEDC01 >60 days 10 / 10 100 (1722) The RPC server is unavailable.
SITE1DC01 14m:49s 0 / 5 0
SITE1DC02 10m:29s 0 / 5 0
Experienced the following operational errors trying to retrieve replication information:
1722 - NEWSITEDC01