Error:
A user tried to create a conference with no Simple URL of type Dialin available. This configuration would lead to inability to find local access numbers for dial-in conferencing.
Domain: mydomani.com
Cause: Missing simple url configuration for this domain
Resoluition: Create a simple URL configuration of type Dialin for the failing domain.
Confusion:
The dialin URL is global. I don't understand why it is wanting a simple url for the specific domain for the dialin url. This is running the hosting pack v2 of Lync 2013. I have found that Microsoft has left out a lot in the document. For example you must still apply the same TenantId and GroupingId to the contacts and distribution groups especially if you want distribution groups to expand.
Also they provided scripts but left out the ObjectId for the users in the scripts so they wree only setting TenantId and GroupingId. At the top it says you must set ObjectId,TenantId, and GroupingId for the users.
It seems Microsoft needs to update the documentation. I have found it is missing a lot of information it seems!!