Error message: This settlement is reserved for the county owner
The settlement in question it Storm End in Gunnr County of Turadh Duchy of the Kingdom of Tryggr on the EU Selene server. The owner of the county already have their own settlement, but somehow this one is not claimable. Had talked with the count, they know that i was planning on claiming it.
Reproduction:
Follow the Domain Selection map on EU Selene, to Tryggr, to Turadh Duchy, to Gunnr county and its the Fort on the coast.
https://i.imgur.com/JHc3QMp.jpg