Lordaeron About death knight.. I can't create it

[TeamOk]

So I tried to create death knight and it says that u need to have a character on any realm at least on 55 Lvl so on icecrown I have paladin on 77 Lvl and on Lordaeron I can't create it? what is the problem and do I need to have on the same realm character on 55 Lvl?

[comlogo]

Yes, have to be same reealm.