Approve a expense
Finance module
POST/expenses/{id}/approveexpenses.approve
Records an approval decision on the expense. The submitter cannot approve it. Spend authority and separation of duties are enforced in the approval RPC; a refusal returns 422 and names the rule. Requires `Idempotency-Key`; a replay returns the original response. A rule that refuses the request returns 422 with `refusal` and `reason`.
- Requires the capability finance.expense.approve.
- OAuth scopes: finance.
- 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 expense. |
Response 200: Expense
| Field | Type | Required | Description |
|---|---|---|---|
| id | string (uuid) | Yes | Identifier of the expense. |
| 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. |
| budget_line_id | string (uuid) | Yes | Identifier of the budget line. |
| submitter_person_id | string (uuid) | null | Yes | Identifier of the person who submitted the expense. |
| description | string | Yes | Expense description.Constraints: length 1 to 300 |
| amount_minor | integer (int64) | null | Yes | Expense amount. Integer minor units of the resource currency; null means unpriced, never zero. |
| currency_code | string | Yes | ISO 4217 currency code of every money field.Constraints: pattern ^[A-Z]{3}$ |
| incurred_on | string (date) | Yes | When it was incurred. |
| expense_state | "Proposed" | "Approved" | "Rejected" | "Paid" | "Canceled" | Yes | Expense state. |
| counterparty_id | string (uuid) | null | Yes | Identifier of the counterparty paid, when it is not the submitter. |
{
"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",
"budget_line_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"submitter_person_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
"description": "Gaffer tape, 12 rolls",
"amount_minor": 14388,
"currency_code": "USD",
"incurred_on": "2026-10-08",
"expense_state": "Proposed",
"counterparty_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f"
}Code samples
curl -X POST "$XOS_BASE_URL/expenses/0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f/approve" \
-H "Authorization: Bearer $XOS_API_KEY" \
-H "Idempotency-Key: $(uuidgen)"const { data } = await xos.expenses.approve("0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f");response = xos.expenses.approve("0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f")xos expenses approve 0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f