MCSink Error observed with cbworkloadgen when data loaded in Ephemeral bucket with durability level=MAJORITY

Created Ephemeral bucket (B2) with durability level=MAJORITY and tried to load data with below command:

cbworkloadgen -n 172.23.97.87:8091 -u Administrator -p password -i 200 -b B2 -j

And error observed as:
2021-08-26 04:45:11,388: s0 error: async operation: error: MCSink MC error: 161 on sink: http://172.23.97.87:8091(default@N/A-0)
error: MCSink MC error: 161

When same command tried for couchbase bucket, data loaded successfully.

C:\Program Files\Couchbase\Server\bin>cbworkloadgen -n 172.23.97.87:8091 -u Administrator -p password -i 200 -b B1 -j
################### 100.0% (211/estimated 211 msgs)
bucket: default, msgs transferred...
: total | last | per sec
byte : 13849 | 13849 | 98217.8
done

Tried to import data into Ephemeral bucket but that is also not working.