DSPs validate that the consumer or user of a commercial software product is a legitimate business with a genuine need to access ATO APIs: they verify the entity (its ABN, and that it is active) against a reliable and independent source such as the Australian Business Register, and obtain valid client contact details including a confirmed email address and phone number; customers without an ABN (for example a student using software for research) have only their contact details validated. Entity validation does not replace service-specific verification such as SuperMatch's customer verification terms.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.