A seller may remit the taxes it collects through Model 1 (contracting a CSP as its agent to perform its sales and use tax functions under the CSP's contract with the Governing Board), Model 2 (contracting to use a CAS that calculates the tax due on each transaction) or Model 3 (using its own proprietary automated system certified as a CAS), or any other method state law allows.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.