Symptoms
When you create an endpoint contact for a trusted application by using the New-CsTrustedApplicationEndpoint cmdlet, the endpoint is not provisioned with a routing group. For example, you use the following cmdlet:
New-CsTrustedApplicationEndpoint -ApplicationId "ApplicationId" -TrustedApplicationPoolFqdn "Fqdn" -DisplayName "DisplayName" -SipAddress "Address"
Resolution
To fix this issue, install the July 2018 cumulative update 6.0.9319.534 for Skype for Business Server 2015, Core Components.
