Just like in OCS with Lync you can add distribution lists to your contact list. However, there is a default limitation on how many groups you can add to your list. In Lync and OCS that limit is 10, which at a recent deployment wasn’t quite enough for all the teams that certain users may need to have on their contact list.
The client used these lists for a number of business functions and would like the limitation to be removed. To start off let’s look at my contact list with 10 distribution lists already added to it.
Now I’ll search for a new distribution list and try to add it to my contact list.
As you can see I get the error “The Contact list already contains the maximum number of distribution groups” when trying to add the eleventh list. To change this behavior we need to modify the client policy in the Lync Management Shell. In this case I’ve chosen to allow the maximum number of distribution lists to be added (64). If you have multiple policies in Lync you will need to modify each one by specifying the identity. Since I only have the one client policy, I can change just that one with the command:
Set-CsClientPolicy -Identity Global -MaximumDGsAllowedInContactList 64
After signing out and back in I can now add additional distribution lists to my contact list.