What defines the required approvals and the associated conditions for a change model?

A change approval policy is attached to a change model and specifies the approvers, approval conditions, and any conditional logic that determines when specific approvals are required or can be bypassed. This makes the approval policy the authoritative configuration object for defining the approval requirements and their associated conditions within the change management process.

A change model's state transitions define when and how a change moves between lifecycle states, but they do not define the approval requirements or the conditions under which specific approvals are needed.

A 'change model approval definition' is not a standard ServiceNow Change Management configuration object - the correct term and object is a change approval policy.

A change approval lifecycle flow describes the overall flow orchestration, but the specific approval requirements and their conditions are defined within the approval policy, not the flow itself.