There is a configfuration option in the Solace binder called provisionErrorQueue ( solace-spring-cloud/solace-spring-cloud-starters/solace-spring-cloud-stream-starter at master · SolaceProducts/solace-spring-cloud (github.com) ).
Does that help?
I have never tried Spring Cloud Bus, but the docs say that any binder on the classpath can be used for the destinations. So I would assume you would bring in the Solace Spring Cloud Stream Starter to your project.
Spring Cloud Bus