If the border card is occupied or forbidden, choose the next free one (counting clockwise).
After placing all the targi you do all of your actions normally. Discard any intersection cards Andy claims without performing any actions.
If Andy would place his targi on the card occupied by the robber OR on card 15 which is occupied or forbidden, do not place his targi on the next free card. Instead, put it on the next free shifting sand dune (whichever is closest to the dune deck. If there is not a free shifting dune, his targi is placed on the noble card (1) or the next free clockwise card as usual.
Every shifting sand dune claimed by Andy is discarded.