Consider the following scenario:
- You have enabled Busy Options feature in a Microsoft Skype for Business Server 2015 environment that has Cumulative Update 2 (Version 6.0.9319.235) or later versions installed.
- You enable a user for Microsoft Exchange Unified Messaging (UM) On-Premises.
- You move the user's mailbox to Exchange Online.
- You enable the user for Exchange UM Online by assigning on-premises hosted voice mail policy.
Note The on-premises attributes for this user are now set as follows:
In this scenario, you can’t set the BusyOnBusy option to an ActionType of VoicemailOnBusy for this user.
Additionally, you receive the following error message:
PS C:\Users\SfBadmin> Set-CsBusyOptions -Identity "Ken Myer" -ActionType VoicemailOnBusy
Set-CsBusyOptions : Voicemail is not enabled for Identity "Ken Myer".
At line:1 char:1
+ Set-CsBusyOptions "Ken Myer" -ActionType VoicemailOnBusy
+ CategoryInfo : InvalidOperation: (:) [Set-CsBusyOptions], BobException
+ FullyQualifiedErrorId : Microsoft.Rtc.Management.Bob.Cmdlets.BobSetConfigurationCmdlet
This issue occurs because the VoicemailOnBusy action type was designed to support only on-premises Exchange UM deployments.