Template:M summ IETA Administrator Event
One of the things, along with a missing Registry Operation, that can prompt a Suspension Event. See our impassioned and, okay, possibly a little grumpy encomium to the shoddy drafting of the combined Carbon Squads in this regard in the Registry Operation page.
These are not the sorts of things that can affect “some but not all” of the Allowances in an account, so unless you are the sort of groover who warehouses your Allowances in Registries all around the EU, there being an event of this kind will put your whole Transaction into Suspension, not just part of it.
Note the ISDA version has added a fourth limb to deal with “linking agreements”, which the other versions may not yet have caught up with.