is the custom base url is set in Artifactory? curl -u<:> https://<artifactory_url>/artifactory/api/system/configuration/platform/baseUrl

similar to the google configuration (https://jfrog.com/help/r/jfrog-platform-administration-documentation/saml-sso-configuration-with-google) the saml service provider name should be the entity ID from Keycloak. and in Keycloak setting you need to change the ACS URL should be in this format : /ui/api/v1/auth/saml/loginResponse/<saml_display_name> and SP Identity is the