Where other (for example jurisdictional) valuation standards are followed, the terms of engagement and report must say so and state the basis of value and its definition; voluntary compliance with other standards is a departure. Where VPS 1 to 6 are not applied under a permitted exception, the valuation must not be described as IVS-compliant, the exception must be stated and explained in the terms and report, written terms are still needed, a changed role over a long instruction must be documented and disclosed, and labels like 'quasi', 'partial' or 'non' Red Book are banned. No departure from PS 1 or PS 2 is allowed; a client asking for advice contrary to a VPS must be told it is a departure, stated in the terms, report and any published reference.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.