I’m very proud of my oopsies, so when someone finds one, I heartily embrace it. In this case, however, there is no mistake.
please verify at My Banzuke Lookup page, where you can enter his shikona in the center search bar, and see every active, kyujo and kosher basho (along with the supporting hoshitoris and MCP scores). Doitsuyama’s number is, indeed 103.