[ANSWERED] "A character with that name already exists" - unable to login after a failed trade in a dungeon

[Tyrskorn]

Quick update: We’ve identified the issue and cross-realm trading has been disabled for now while we work on a fix. More info and updates here:

Cross-realm trading is temporarily disabled

We’ve identified an issue with cross-realm trading that requires us to temporarily disable the function. We’re working on a fix, and until we’re finished with that work, cross-realm trading should fail when attempted. We’ll let you know as soon as we’re done. Thank you!

Thanks to everyone who helped raise this, and apologies for the inconvenience!