From BlackBerry via Support Alert System: Please be advised that on Jan 24th BlackBerry will be conducting a live failover exercise to test our disaster recovery processes. This will involve 30 mins of downtime during a 2 hour window.
Start Time: Jan 24th 19:30 EST
End Time: 21:30 EST
BES10 and BlackBerry UEM (formerly BES12) Administrators may experience delays when submitting new Certificate Signing requests to manage newly added iOS devices. Additionally, users may experience delays while updating existing iOS customer information on the BlackBerry Signature Service Database.
If your organization is using devices that leverage these platforms you may wish to avoid activations during this timeframe to avoid delays.