Room Finder not working with Address Book Policies

Question

Hi,
I have an issue with Room Finder and Address Book Policies whereby when a mailbox user is apart of an ABP they cannot see any rooms within the room finder in Outlook. They can however see their organisations rooms in the address book (which is
the intended outcome of using ABPs)
If the user is part of the default GAL (no ABP) then all roomlists can be seen in room finder making me suspect that the problem is with the ABP
I came across an article which is very similar to the problem that I am encountering however I am already using the suggested fix (using recipient filters) -
Background to configuration
We have a multi tenant exchange 2013 environment where each tenant is segmented from other tenants by the use of address book policies.
Each tenant have been set-up using the following cmdlets:
New-GlobalAddressList -Name "TenantName - GAL" -ConditionalCustomAttribute15 "ABC" -IncludedRecipients MailboxUsers -RecipientContainer "Path/to/OU
New-AddressList -Name "TenantName - All Rooms" -RecipientFilter "(CustomAttribute15 -eq 'ABC') -and (RecipientDisplayType -eq 'ConferenceRoomMailbox')" -RecipientContainer "Path/to/OU
New-AddressList -Name "TenantName - All Users" -RecipientFilter "(CustomAttribute15 -eq 'ABC') -and (ObjectClass -eq 'User')" -RecipientContainer "Path/to/OU
New-AddressList -Name "TenantName - All Contacts" -RecipientFilter "(CustomAttribute15 -eq 'ABC) -and (ObjectClass -eq 'Contact')" -RecipientContainer "Path/to/OU
New-AddressList -Name "TenantName - All Groups" -RecipientFilter "(CustomAttribute15 -eq 'ABC') -and (ObjectClass -eq 'Group')" -RecipientContainer "Path/to/OU
New-OfflineAddressBook -Name "TenantName" -AddressLists "TenantName - GAL" 
New-AddressBookPolicy -Name "TenantName" -AddressLists "TenantName - All Users", "TenantName - All Contacts", "TenantName - All Groups" -GlobalAddressList "TenantName - GAL" -OfflineAddressBook "TenantName"
-RoomList "TenantName - All Rooms"
As you can see each address list is populated by custom attribute 15 corresponding to the tenants code (of local significance) and the OU that the object resides in.
N.B. I have rebuilt my outlook profile, switched to non-cached mode to no avail
To reiterate, the ABP is working great apart from this room finder feature issue, each tenant can only see their rooms in their address book just not in the room finder.
I have tried to build distribution group roomlists and set the custom attribute and OU to test but this didn't work as I'm aware you can only have address lists in the set-addressbookpolicy -roomlist cmdlet parameter, not distribution groups

Answer 1

Hi Winnie,
Apologies for not replying sooner, I've been busy over New Year!
I have already seen/followed similar instructions to create roomlist's to no avail.
The roomlist's created are all visible to a user when they are not apart of an ABP but when they are part of an ABP it shows no roomlists within room Finder.
As initially mentioned, the tenants rooms can be seen in their address book just not in room finder!
Here is the powershell results 
PS] C:\Windows\system32>Get-DistributionGroup "Group: Test Room List"
Name                          DisplayName                   GroupType                     PrimarySmtpAddress
Group: Test Room list         Group: Test Room list         Universal                     [email protected]
PS] C:\Windows\system32>Set-DistributionGroup "Group: Test Room List" -RoomList
WARNING: The command completed successfully but no settings of 'cdc.com/Cdc/Group: Test Room list' have
been modified.
PS] C:\Windows\system32>Get-DistributionGroup "Group: Test Room List"
Name                          DisplayName                   GroupType                     PrimarySmtpAddress
Group: Test Room list         Group: Test Room list         Universal                     [email protected]
PS] C:\Windows\system32>