New-CsOnlinePSTNGateway returns “Can not use the domain as it was not configured for this tenant”

Hi All, few weeks ago I was stuck creating a new PSTN Gateway for Teams Direct Routing due to a strange error.This is the PS command (FQDN masked)New-CsOnlinePSTNGateway -Fqdn sbc01.domain.com -SipSignallingPort 5061 -MaxConcurrentSessions 10 -Enabled $true and this is the errorCan not use the "sbc01.domain.com" domain as it was not configured for this tenant Obviously...

Diagnostic ID: 10500 and sip-reason=”Q.850; cause=44; text=”Requested Circuit/Channel N/A”

Hi all, recently one of our Skype for Business Enterprise Voice customer found many of these Unexpected errors in it's Monitoring Reports Request: INVITE Response: 500 Diagnostic ID: 10500 Category: Unexpected Component: Mediation Server Reason: Gateway responded with 500 Server Internal Error Description: This response from a gateway can occur if the gateway encountered an unexpected condition that prevented the...