From 5b7630e3a1c7b61afc428d20b81f945a805d0090 Mon Sep 17 00:00:00 2001
From: Ulf Bjorkengren <ulfbjorkengren@geotab.com>
Date: Wed, 8 Mar 2023 13:36:36 +0100
Subject: [PATCH] Issue #475 - update of CORE:Error Message chapter.

---
 spec/VISSv2_Core.html | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/spec/VISSv2_Core.html b/spec/VISSv2_Core.html
index c1afaad..6e920ea 100644
--- a/spec/VISSv2_Core.html
+++ b/spec/VISSv2_Core.html
@@ -440,8 +440,10 @@ <h2>Subscription</h2>
       <section id="error-message">
         <h2>Error Message</h2>
         <p>The server MUST inform a client about errors ocurring in interactions between the two, whether it is in a synchronous 
-        error response, or an asynchronous error notification as a result of a previous subscribe. The error message has three arguments, 
-        of which subscriptionId is mandatory only for error notifications.
+        error response, or an asynchronous error notification as a result of a previous subscribe. 
+        For transport protocols which do not control the logical linking between request and response messages it may not be possible to link an error message to the correct client request. 
+        In cases like this the server may omit sending an error message. 
+        The error message has three arguments, of which subscriptionId is mandatory only for error notifications.
         </p>
           <p>Arguments: 
             <ul>