Hi, I would like SATOSA to receive a SAML assertion from an IdP and check for a configured set of asserted attributes such as the REFEDs R&S bundle. If the configured set of asserted attributes is not present then SATOSA should redirect the browser to an external "error page" to manage the situation. I do not see an existing SATOSA microservice that can implement that requirement. Am I correct? The primary_identifier microservice can do that for a single identifier but not for a set of attributes. If no such microservice (or combination of microservices) can do that today, I will probably proceed with writing such a microservice. If you want to input to the requirements and/or design please let me know. Thanks, Scott K