I have a Postgres database in AWS RDS currently running version 9.6.11, and I'm trying to perform a major upgrade to version 10.7. I've followed the Upgrade Guide to create a new version-compatible parameter group, and also created a new version-compatible option group just in case.
When I attempt to initiate the upgrade in the AWS Console, I get this error message.
However, there is no apparent place in the RDS console that allows me to specify a new Option Group. What am I missing? Is there something else that needs to be done so that I can upgrade through the Console, or am I required to use the CLI or REST API to accomplish this?