Subscription only in UWL, no E-Mail

Hello,

is it possible to create a subscription, so that no e-mail or SMS will be send?

We have connected the Portal to our Active Directory, but there is no e-mail address specified for the user.

Subscriptions should only be shown in the Universal Worklist (UWL).

It is not possible to create a subscription, because there is no valid channel. Is it possible to create maybe a dummy-channel or something like that, so that we don't get an error-message when creating a subscription?

Thank you in advance

Sven