Error configuring database

Hello,

I’m setting up a new environment. I have an app server and db servers (from OVA file).

I wish to configure the database connection. Logging into the app server, using the appliance console, I choose configure database --> Join region in external database --> enter IP address of db server, default port number, default database name, and user+password. I get the following error:

I found nothing enlightening in the logs.

any pointers?

Thank you!

did you copy the v2_key over from the database appliance first?