Special event callsign cannot be entered

I worked station 4UNR (united nations radio) which can be seen in QRZ.com

Entering this in the call text box greys out the up arrow suggesting it is invalid.

Is there a trick to overwrite the logic of callsign validity?

Thanks and 73 de G0VZM (Ian)

Their QRZ states that 4U0R is the same call

So for the moment enter that one. Even QRZ has a hiccup on that one but it enters into PoLo OK and resolves to their contest callsign

Again - it does state that it’s the same contest callsign.

Alan

Additionally, ClubLog has not caught up with this callsign either:

I’m sure it will be addressed shortly

Alan