Some RPs need to ensure that specific criteria are met during the authentication process. This need is met by using levels of assurance. A level of assurance is communicated to the RP from the EAP server by using a SAML Authentication Request, using the Authentication Profile described in [RFC7833]. When crossing boundaries between different federations, (1) the policy specified will need to be shared between the two federations, (2) the policy will need to be mapped by the proxy server on the boundary, or (3) the proxy server on the boundary will need to supply information to the EAP server so that the EAP server can do the required mapping. If this mapping is not done, then the EAP server will not be able to enforce the desired level of assurance, as it will not understand the policy requirements.