Added clarification for events that do/not include session values

2014-08-04 16:28:15 -04:00
parent 672c2a94a1
commit 90a64a7d58
1 changed files with 3 additions and 1 deletions
--- a/docs/en_us/data/source/internal_data_formats/tracking_logs.rst
+++ b/docs/en_us/data/source/internal_data_formats/tracking_logs.rst
@@ -249,7 +249,9 @@ emitted.
 **Type:** string

 **Details:** This 32-character value is a key that identifies the user's
-session. Can be undefined.
+session. All browser events and the server :ref:`enrollment<enrollment>` events
+include a value for the session. Other server events do not include a session
+value.

 ===================
 ``time`` Field