Provide at least one exit route, make every route easy to find and straightforward, and keep the steps to what is needed. Add an online route where the contract was entered online or online entry is offered for the same sort of product. This is the provision that answers the subscription trap. The test is not whether a cancellation route exists, but whether a subscriber can find it and use it without a queue, a script or a retention maze. Every route counts, so a phone line that is hard to find is still a route that fails the standard. The online route is required where the subscriber entered online or the supplier offers online entry for the same sort of product, which covers most consumer subscriptions. The steps must be needed to end it and to protect the subscriber, so a confirmation and an identity check can be reasonable, but a required sales call usually is not.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.