Transition the work order state
Work module
POST/work-orders/{id}/transitionsworkOrders.transition
Moves the work order lifecycle to another state through its transition RPC, which writes the transition ledger. Uses compare-and-set on `expected_state`; a disallowed transition returns a 422 refusal. Requires `Idempotency-Key`; a replay returns the original response. A rule that refuses the request returns 422 with `refusal` and `reason`.
- Requires the capability work.work_order.write.
- OAuth scopes: work.
- Send an Idempotency-Key header. A replay with the same key returns the original response.
- Error statuses: 400, 401, 404, 409, 422, 429. Errors are RFC 9457 problem details.
Path and query parameters
| Field | Type | Required | Description |
|---|---|---|---|
| id | string (uuid) | Yes | Identifier of the work order. |
Request body: WorkOrderTransitionRequest
| Field | Type | Required | Description |
|---|---|---|---|
| expected_state | string | Yes | The state the caller believes the row is in (compare-and-set).Constraints: pattern ^[A-Z][A-Za-z]*( [A-Z][A-Za-z]*)*$ |
| to_state | string | Yes | Target state.Constraints: pattern ^[A-Z][A-Za-z]*( [A-Z][A-Za-z]*)*$ |
| reason | string | No | Reason, required by some transitions.Constraints: length 1 to any |
{
"expected_state": "Proposed",
"to_state": "Active",
"reason": "Client approved the revised scope."
}Response 200: WorkOrder
| Field | Type | Required | Description |
|---|---|---|---|
| id | string (uuid) | Yes | Identifier of the work order. |
| org_id | string (uuid) | Yes | Identifier of the owning organization, derived from the parent row and never accepted from the caller. |
| created_at | string (date-time) | Yes | When the row was created. |
| created_by | string (uuid) | null | Yes | Identifier of the person who created the row; null when a seed, platform or system process created it. |
| updated_at | string (date-time) | Yes | When the row was last updated. |
| updated_by | string (uuid) | null | Yes | Identifier of the person who last updated the row; null when a seed, platform or system process updated it. |
| project_id | string (uuid) | Yes | Identifier of the project. |
| record_id | string (uuid) | null | Yes | Identifier of the record the work order fulfills. |
| title | string | Yes | Work order title.Constraints: length 1 to 300 |
| urid | UridAtAnyGrain | Yes | URID at discipline grain (`DDDD.DD`) or category grain (`DDDD.DD.DD`), as GL dimension 2 allows.Constraints: pattern ^[0-9]000(\.[0-9]{2}){1,2}$ |
| work_order_state | string | Yes | Work order state. A Title Case value from the lifecycle's database enum.Constraints: pattern ^[A-Z0-9][A-Za-z0-9&'/.()-]*( [A-Za-z0-9&'/.()-]+)*$ |
| due_at | string (date-time) | null | Yes | When the work is due. |
| budget_minor | integer (int64) | null | Yes | Budget for the work. Integer minor units of the resource currency; null means unpriced, never zero. |
| currency | string | Yes | ISO 4217 currency code of every money field.Constraints: pattern ^[A-Z]{3}$ |
| work_order_number | integer | Yes | Sequence number within the project; the display key is {project_key}-WO-{number}.Constraints: range 1 to any |
| location_text | string | null | Yes | Where the work happens, in words, when no zone says it.Constraints: length 1 to 300 |
| scope_of_work | string | null | Yes | The scope bidders price, in sentence case.Constraints: length 1 to 20000 |
| scheduled_starts_at | string (date-time) | null | Yes | Planned start. |
| estimated_hours | number | null | Yes | Estimated labor hours; null when unestimated. |
{
"id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"org_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"created_at": "2026-10-08T14:30:00Z",
"created_by": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"updated_at": "2026-10-08T14:30:00Z",
"updated_by": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"project_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"record_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"title": "Fabricate Bar Fascia",
"urid": "4000.01",
"work_order_state": "Proposed",
"due_at": "2026-10-08T14:30:00Z",
"budget_minor": 850000,
"currency": "USD",
"work_order_number": 12,
"location_text": "Main stage, stage left wing.",
"scope_of_work": "Supply and hang 24 moving lights.",
"scheduled_starts_at": "2026-10-08T14:30:00Z",
"estimated_hours": 16
}Code samples
curl -X POST "$XOS_BASE_URL/work-orders/0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f/transitions" \
-H "Authorization: Bearer $XOS_API_KEY" \
-H "Idempotency-Key: $(uuidgen)" \
-H "Content-Type: application/json" \
-d '{"expected_state":"Proposed","to_state":"Active","reason":"Client approved the revised scope."}'const { data } = await xos.workOrders.transition("0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f", {
"expected_state": "Proposed",
"to_state": "Active",
"reason": "Client approved the revised scope."
});response = xos.work_orders.transition("0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f", {"expected_state": "Proposed", "to_state": "Active", "reason": "Client approved the revised scope."})xos work-orders transition 0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f --data '{"expected_state":"Proposed","to_state":"Active","reason":"Client approved the revised scope."}'