MilestoneMilestone

A time-bound event in the programme (e.g., 'Entity incorporated', 'First payroll run from GCC'). Milestones are sequenced under Gates and blocked by open Decisions.

RACI requirements

decision_maker

required

approver

optional

reviewer

optional

contributor

optional

informed

optional

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://gcc.bootminds.com/ontology/node-types/milestone.json",
  "title": "Milestone",
  "description": "A time-bound event in the programme (e.g., 'Entity incorporated', 'First payroll run from GCC'). Milestones are sequenced under Gates and blocked by open Decisions.",
  "type": "object",
  "x-node-type": "Milestone",
  "x-lifecycle-state-machine": "milestone",
  "x-raci-requirements": {
    "decision_maker": "required",
    "approver": "optional",
    "reviewer": "optional",
    "contributor": "optional",
    "informed": "optional"
  },
  "x-retention-class": "operational",
  "required": [
    "node_id",
    "node_type",
    "tenant_id",
    "attributes",
    "state",
    "created_at",
    "created_by"
  ],
  "properties": {
    "node_id": {
      "type": "string",
      "format": "uuid"
    },
    "node_type": {
      "const": "Milestone"
    },
    "tenant_id": {
      "type": "string",
      "format": "uuid"
    },
    "state": {
      "type": "string",
      "enum": [
        "Planned",
        "InFlight",
        "AtRisk",
        "Slipped",
        "Achieved"
      ],
      "description": "Milestone lifecycle state. Transitions governed by the 'milestone' state machine. MilestoneSlipped emits a first-class event used by Programme Confidence scoring."
    },
    "attributes": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "name",
        "due_date",
        "exit_criteria"
      ],
      "properties": {
        "name": {
          "type": "string",
          "minLength": 1,
          "description": "Short milestone name."
        },
        "description": {
          "type": "string",
          "description": "Optional longer description of what 'achieving' this milestone means."
        },
        "due_date": {
          "type": "string",
          "format": "date",
          "description": "Committed due date (ISO 8601 date)."
        },
        "owner_id_ref": {
          "type": [
            "string",
            "null"
          ],
          "format": "uuid",
          "description": "Stakeholder UUID accountable for this milestone (RACI Decision-maker, denormalised for convenience)."
        },
        "exit_criteria": {
          "type": "array",
          "description": "Free-text criteria that must be satisfied for the milestone to transition to Achieved.",
          "items": {
            "type": "string",
            "minLength": 1
          }
        },
        "achieved_at": {
          "type": [
            "string",
            "null"
          ],
          "format": "date-time",
          "description": "Actual achievement timestamp; null until state == Achieved."
        },
        "slipped_to_date": {
          "type": [
            "string",
            "null"
          ],
          "format": "date",
          "description": "If state == Slipped, the revised target date. Used by Programme Confidence schedule realism component."
        }
      }
    },
    "created_at": {
      "type": "string",
      "format": "date-time"
    },
    "created_by": {
      "type": "string",
      "format": "uuid"
    },
    "updated_at": {
      "type": "string",
      "format": "date-time"
    }
  }
}