diff --git a/sdk-generation-log/sessionauthentication.json b/sdk-generation-log/sessionauthentication.json
index 3b38c2f7f..abaa6838f 100644
--- a/sdk-generation-log/sessionauthentication.json
+++ b/sdk-generation-log/sessionauthentication.json
@@ -1,8 +1,8 @@
 {
   "service": "sessionauthentication",
   "project": "node",
-  "generatedAt": "2026-08-27T12:21:15Z",
-  "openapiCommitSha": "2d9a60ee236f2930d9629100900995b99fffd590",
-  "automationCommitSha": "2f180b958babc6bbd6f0b6b73d7e4c6feefe256e",
-  "libraryCommitSha": "2ec9f87e54e78a88b251f6761fa0a7200f91bfcd"
+  "generatedAt": "2026-09-28T10:18:16Z",
+  "openapiCommitSha": "1f65c97e26bafa8f7a5d35931b26e16edeec345e",
+  "automationCommitSha": "db93bc35548c7c9d6aff97d76a513634967fd304",
+  "libraryCommitSha": "134f50078ca8889ff21e6c76f71c6377ddcb2120"
 }
diff --git a/src/typings/sessionAuthentication/authenticationSessionRequest.ts b/src/typings/sessionAuthentication/authenticationSessionRequest.ts
index 065455241..0fb656f64 100644
--- a/src/typings/sessionAuthentication/authenticationSessionRequest.ts
+++ b/src/typings/sessionAuthentication/authenticationSessionRequest.ts
@@ -13,9 +13,9 @@ import { ProductType } from "./productType";
 
 export class AuthenticationSessionRequest {
     /**
-    * The URL where the component will appear. In your live environment, you must protect the URL with an SSL certificate and ensure that it starts with `https://`.
+    * The URL where the component will appear. In your live environment, you must protect the URL with an SSL certificate and ensure that it starts with `https://`.  Required for creating a session for Platform Experience and Onboarding components. Omitting this parameter results in an unusable session token.
     */
-    "allowOrigin": string;
+    "allowOrigin"?: string;
     "policy": Policy;
     "product": ProductType;