I try to abort a few hundred events and receive a message I need a
support authorization ticket. Can somebody help me with this?

The reason why I try to do this is that they are configured to copy
their data to a server that's low on disk space. I stopped the sentinel
on the specific box, and added another path to the policy. However, the
events are still pointing to the server low on disk space. So now I
decided to abort the pending events, and then try another backfill.