Looking at the [details][1] of the way reveals that the start node is not the same as the end node. There is [one node][2] connected at the start of the way. You curently have a way looking like A->B->...->Z->B, but you an area are on the form A->B->...->Z->A. [1]: http://www.openstreetmap.org/browse/way/129497616 [2]: http://www.openstreetmap.org/browse/node/1428668235

Looking at the [details][1] of the way reveals that the start node is not the same as the end node. There is [one node][2] connected at the start of the way. You curently have a way looking like A->B->...->Z->B, but you an area are on the form A->B->...->Z->A. [1]: http://www.openstreetmap.org/browse/way/129497616 [2]: http://www.openstreetmap.org/browse/node/1428668235