diff --git a/TransportClient.md b/TransportClient.md
index 8af4ab0..255b366 100644
--- a/TransportClient.md
+++ b/TransportClient.md
@@ -5,7 +5,7 @@ TransportClient is a [BSP client](BSP) that synchronises transport properties be
 TransportClient uses the following client identifer:   
 `673e a091 6735 61e2 8f70 122f 6a8e a8f4 97c3 624b 86fa 07f7 85bb 15f0 9fb8 7b4b`
 
-The client uses a single group for all messages. The [group descriptor](BSP#group-identifiers) is an empty [BDF list](BDF).
+The client uses a separate group for each pair of contacts. The [group descriptor](BSP#group-identifiers) is a [BDF list](BDF) containing the unique IDs of the contacts' identities, sorted in ascending order as byte strings.
 
 ### Message types
 
@@ -18,9 +18,9 @@ The client uses a single group for all messages. The [group descriptor](BSP#grou
 ### Storage policy
 
 * For each transport, the local message with the highest version is stored.
-* For each transport and each remote peer, the remote message with the highest version is stored.
+* For each transport, the remote message with the highest version is stored.
 
 ### Sharing policy
 
-* Local messages are shared with all remote peers.
-* Each remote message is shared with the remote peer that created it.
+* All local messages are shared.
+* All remote messages are shared.