TFS Plugin has been configured and test connectivity is successful. Jenkin builds are triggered by SCM polling. Build completes but TFS PR and work items are not update with build status. Jenkins logs report the following:

SCM changes detected in nichd-dotnet-jenkins. Triggering #12
Jan 30, 2019 4:04:13 PM INFO hudson.model.Run execute
nichd-dotnet-jenkins #12 main build action completed: SUCCESS
Jan 30, 2019 4:04:13 PM INFO hudson.plugins.tfs.listeners.JenkinsRunListener onCompleted
onCompleted: nichd-dotnet-jenkins #12

What can I do to get more logging to help identify the problem?

What should the logs contain if updating TFS was working?