From 1 September 2019 a marketplace facilitator meeting substantial nexus is treated as the seller of every sale it facilitates: it holds a seller's use tax licence, collects Ohio tax, files and pays on all taxable facilitated sales. A seller selling only through a marketplace that collects for it does not need the licence.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.