A far as I see mp.openapi.scan.beanvalidation is not yet supported by Payara (Eclipse MicroProfile OpenAPI API :: Payara Enterprise Documentation), however the feature is available in MP Openapi 3.1.x: microprofile-open-api/spec/src/main/asciidoc/microprofile-openapi-spec.asciidoc at 3.1.x · microprofile/microprofile-open-api · GitHub
Are there plans to support bean validation in the near future?