Hi Christian, You mentioned it was a secondary HANA instance on a SINGLE HOST SYSTEM before it was deregistered. Can you please the nameserver.ini file under the below path on the Secondary host under: /hana/shared/SID/global/hdb/custom/config [landscape] id = 76183046-abdc-3w24-d230-0000a1109ae7 master = *NODENAME*:30001 idsr = 5413c002-7632-b615-e100-0000b7609b20 You should not see any entries for the Replication ID if it was properly deregistered from the System Replication. It will confirm that the Replication is not causing the issue
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