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JFM_12
Iron Contributor
Jun 25, 2025
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Add existing Holiday to Auto Attendant

Hello I have created an Auto Attendant and would like to add an existing Holiday that is already configured to  the Auto Attendant with Powershell. Is it also possible to rename the CallFlow so th...
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JFM_12's avatar
JFM_12
Iron Contributor
Jun 25, 2025

Hello Prasad Das
Thank you very much for your answer.
There is an error for the adding

Set-CsAutoAttendant : A parameter cannot be found that matches parameter name 'HolidaySets'.

As far that I see on explanation the ID of the Get-CsAutoAttendantHolidays needs to be the ID of an existing AA which has the holidays.

The Set-CsAutoAttendant uses only the parameter Instance
Have a great day

JFM_12

Prasad_Das-MSFT's avatar
Prasad_Das-MSFT
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Jul 02, 2025

Here's an example which you can follow:

$autoAttendant = Get-CsAutoAttendant -Identity "fa9081d6-b4f3-5c96-baec-0b00077709e5"

$christmasGreetingPrompt = New-CsAutoAttendantPrompt -TextToSpeechPrompt "Our offices are closed for Christmas from December 24 to December 26. Please call back later."
$christmasMenuOption = New-CsAutoAttendantMenuOption -Action DisconnectCall -DtmfResponse Automatic
$christmasMenu = New-CsAutoAttendantMenu -Name "Christmas Menu" -MenuOptions @($christmasMenuOption)
$christmasCallFlow = New-CsAutoAttendantCallFlow -Name "Christmas" -Greetings @($christmasGreetingPrompt) -Menu $christmasMenu

$dtr = New-CsOnlineDateTimeRange -Start "24/12/2017" -End "26/12/2017"
$christmasSchedule = New-CsOnlineSchedule -Name "Christmas" -FixedSchedule -DateTimeRanges @($dtr)

$christmasCallHandlingAssociation = New-CsAutoAttendantCallHandlingAssociation -Type Holiday -ScheduleId $christmasSchedule.Id -CallFlowId $christmasCallFlow.Id

$autoAttendant.CallFlows += @($christmasCallFlow)
$autoAttendant.CallHandlingAssociations += @($christmasCallHandlingAssociation)

Set-CsAutoAttendant -Instance $autoAttendant


This example adds a Christmas holiday to an AA that has an Identity of fa9081d6-b4f3-5c96-baec-0b00077709e5.

Ref: Set-CsAutoAttendant (MicrosoftTeamsPowerShell) | Microsoft Learn

 

TAC reference here - https://learn.microsoft.com/en-us/microsoftteams/create-a-phone-system-auto-attendant?tabs=call-flow#step-23-set-up-call-flows-for-holidays-optional

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