diff --git a/x-pack/docs/en/rest-api/security/saml-prepare-authentication-api.asciidoc b/x-pack/docs/en/rest-api/security/saml-prepare-authentication-api.asciidoc index 9bf1ac1ec0d9e..a42af747c4821 100644 --- a/x-pack/docs/en/rest-api/security/saml-prepare-authentication-api.asciidoc +++ b/x-pack/docs/en/rest-api/security/saml-prepare-authentication-api.asciidoc @@ -51,6 +51,11 @@ clients. See also <>, used to generate the authentication request. You must specify either this parameter or the `acs` parameter. +`relay_state`:: + (Optional, string) A string that will be included in the redirect URL that this API returns + as the `RelayState` query parameter. If the Authentication Request is signed, this value is + used as part of the signature computation. + [[security-api-saml-prepare-authentication-response-body]] ==== {api-response-body-title}