Hi
I have two sites with a vSan cluster on each one. The vCenter are in 8.03 00600 and hosts are in vSphere 8.03f (so not the latest build but close to it).
On each site I have download and deployed VLR appliances 9.0.0.4 (latest available). After registering each appliance on his own vCenter I have paired both sites without problem.
However during the mapping test I see that one site is OK:

But the other site shows this error:

The vSphere Replication management server cannot configure replication on target vSphere Replication server (id: 'host-2177', name: 'hostX.mydomain.local') and target broker 'x.x.x.x'.
As a result, I can perfectly perform a replication from site A to site B but I can't replicate at the oposite direction.
It looks as a communications issue, but I don't find where it is the problem. Cause every host, vCenter and VLR Appliance can "ping" between them, no matter if they are conntacting to site A or site B. Also there are no firewall rules between sites so blocked ports should not be an issue...
Any idea about what could it be?
Thanks in advance!