World Transfer

[Sagittarian]

Thanks for the explanation. so whether i can transfer my character depends solely on whether there's "space" on that certain world?

In general, yes. You can check here to see which servers are locked due to "periods of high congestion".
Originally you weren't allowed to transfer off of the legacy servers and at the ps4 launch you weren't allowed to transfer to the 3 brand new servers. Those restrictions are to preserve the economy of the newer servers. I think both of those restrictions may have been lifted but I'm not 100% sure.