Update paloaltoadmin-tutorial.md

Minor warning / note not to remove port 443 from the URL's as it's 100% required sadly.

Author: jdelforno

articles/active-directory/saas-apps/paloaltoadmin-tutorial.md

@@ -114,6 +114,8 @@ To configure Azure AD single sign-on with Palo Alto Networks - Admin UI, perform
 
 	> [!NOTE]
 	> These values are not real. Update these values with the actual Sign-On URL, Identifier and Reply URL. Contact [Palo Alto Networks - Admin UI Client support team](https://support.paloaltonetworks.com/support) to get these values. You can also refer to the patterns shown in the **Basic SAML Configuration** section in the Azure portal.
+	>
+	> Port 443 is required on the **Identifier** and the **Reply URL** as these values are hardcoded into the Palo Alto Firewall. Removing the port number will result in an error during login if removed.
 
 5. Palo Alto Networks - Admin UI application expects the SAML assertions in a specific format. Configure the following claims for this application. You can manage the values of these attributes from the **User Attributes** section on application integration page. On the **Set up Single Sign-On with SAML** page, click **Edit** button to open **User Attributes** dialog.