Flows and Subflows are the appropriate mechanism because this requirement involves an end-to-end automated ordering and approval process rather than merely defining who may approve. A ServiceNow flow can begin when an order or requested item is submitted, initiate approval actions, evaluate the approval result, send notifications, and continue processing through subsequent approval levels.
Flow Designer is specifically designed to automate approvals, tasks, notifications, and record operations , making it directly applicable to this scenario. ServiceNow ServiceNow ' s approval architecture also uses the Ask for Approval action in Flow Designer for workflow-driven approval logic; legacy approval rules have been superseded for this purpose. ServiceNow
A flow can therefore coordinate the complete sequence: employee submits the phone order, the appropriate approver receives an approval request, notifications are generated, approval results are evaluated, and the process advances to the next approval stage. Reusable portions of this logic can be implemented as subflows.
Approver Delegates provide temporary authority to another person but do not construct the ordering process. Parent-Child Approvers and Approval Criteria similarly do not provide the comprehensive orchestration required by the scenario.
Study Guide Reference/Topics: Self-Service and Process Automation → Flow Designer → Flows and Subflows → Ask for Approval → Notifications → Service Catalog Fulfillment.
