This answer did only add confusion to this issue.
Even if the ERA is a direct predecessor to ESMC, there's still no "Settings" button in ESMC as it was in ERA as it seems.
We use the EMA as the portal to book and assign licenses to customers and the ESMC to handle the Clients on the customer's networks. We do not have a EBA account.
So, by now, there's no way to disable this warning in ESMC, did I get this right?
EDIT: just to stay clear on what I mean; I've already disabled the notification in ESMC but the color highlighting is still active and this is the part that I want to deactivate.
None of our customers book 10% more licenses than they actually need (why should they?) and I'd like to have a clean interface as long as there is no actual problem.
This all sounds kind of senseless to me and I do not want to believe that we have to live with something like this.
The color highlighting makes it look as if there was something wrong and spending time just to check this warning and to see that there's nothing wrong at all, is a waste of time.