XDCR Replication couchbase server 4.0.0

I am using couchbase server Version: 4.0.0-4051 Community Edition (build-4051).

All the documentation talks about is bi-directional replication. Is it possible to have 3 clusters in AWS in different locations to be replicated to with out issues. I am seeing some errors on the one cluster which is setup to replicate out to two other clusters while getting replications from the other two clusters.

A => B
A => C
B => A
C => A

Could there be a potential issue with size of the cluster currently I have 250 million items in the same bucket?

Would you please post what errors you are getting?