SFBO Trusted Application API establish failed for tenants operated by 21vianet

Dear all.

Could anyone help for trusted application on 21vianet?

According to the Trusted Application API (Public Preview)

When i start with following command, an error is generated.

New-CsOnlineApplicationEndpoint -ApplicationID 41ec7d50-ba91-1208-73ee-136b88859725 -Name TestApp -Uri sip:username@yourdomain.partner.onmschina.cn

Cmdlet invocation error

    + CategoryInfo          : NotSpecified: (:) [New-CsOnlineApplicationEndpoint], CmdletInvocationException

    + FullyQualifiedErrorId : Error processing cmdlet request,Microsoft.Rtc.Management.Hosted.PlatformService.NewPlatf

   ormServiceAppEndpointConfigCmdlet

    + PSComputerName        : admin0g.online.partner.lync.cn

Business Voice Directory service discovery failed. Please try again at a later time.

    + CategoryInfo          : NotSpecified: (Microsoft.Rtc.M...t a later time.:PlatformServiceCmdletException) [New-Cs

   OnlineApplicationEndpoint], BvdCmdletException

    + FullyQualifiedErrorId : Could not instantiate TrustedApplicationEndpointManager,Microsoft.Rtc.Management.Hosted.

   PlatformService.NewPlatformServiceAppEndpointConfigCmdlet

    + PSComputerName        : admin0g.online.partner.lync.cn