AWS EventBridge: event source/bus naming comventions

I’m attempting to set up the log stream integration with AWS EventBridge. When I set up the event source on the auth0 side, the name is automatically generated. This accurately appears in the list of partner event sources in aws. When i try to use the event source name while creating the event bus, I’m getting and ‘invalid name’ error.

Has anyone ran into this issue? Any work arounds?