In TOGAF’s ADM, the Request for Architecture Work is the deliverable issued by the sponsoring organization (or stakeholder) to formally request that the architecture team perform a full architecture development cycle. That corresponds to your “deliverable 3.” Then, the architecture team responds by producing a Statement of Architecture Work (in Phase A), which defines the scope, constraints, approach, and highlevel tasks for the architecture development. That is your “deliverable 4” (the scope and approach). Thus deliverable 3 is the Request for Architecture Work, and deliverable 4 is generated in Phase A. The Request triggers the cycle; the Statement of Architecture Work (in Phase A) lays down how the architecture work will proceed, including scoping and approach.