Update an expense
Finance module
PATCH/expenses/{id}expenses.update
An expense. One expense posts to exactly one budget line; the submitter cannot approve it. Updates the fields sent; omitted fields are unchanged. Requires `If-Match` with the current `ETag`: a stale tag returns 412 and a missing tag returns 428.
- Requires the capability finance.expense.write.
- OAuth scopes: finance.
- Send If-Match with the ETag you read. A stale tag returns 412; a missing tag returns 428.
- Error statuses: 400, 401, 404, 412, 422, 428, 429. Errors are RFC 9457 problem details.
Path and query parameters
| Field | Type | Required | Description |
|---|---|---|---|
| id | string (uuid) | Yes | Identifier of the expense. |
Request body: ExpenseUpdate
| Field | Type | Required | Description |
|---|---|---|---|
| description | string | No | Expense description.Constraints: length 1 to 300 |
| amount_minor | integer (int64) | No | Expense amount. Integer minor units of the document currency.Constraints: range 0 to any |
| currency_code | string | No | ISO 4217 currency code of every money field.Constraints: pattern ^[A-Z]{3}$ |
| incurred_on | string (date) | No | When it was incurred. |
| counterparty_id | string (uuid) | null | No | Identifier of the counterparty paid, when it is not the submitter. |
{
"description": "Gaffer tape, 12 rolls",
"amount_minor": 14388,
"currency_code": "USD",
"incurred_on": "2026-10-08",
"counterparty_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f"
}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 PATCH "$XOS_BASE_URL/expenses/0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f" \
-H "Authorization: Bearer $XOS_API_KEY" \
-H 'If-Match: W/"etag-from-your-last-read"' \
-H "Content-Type: application/json" \
-d '{"description":"Gaffer tape, 12 rolls","amount_minor":14388,"currency_code":"USD","incurred_on":"2026-10-08","counterparty_id":"0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f"}'const { data, etag } = await xos.expenses.update("0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f", {
"description": "Gaffer tape, 12 rolls",
"amount_minor": 14388,
"currency_code": "USD",
"incurred_on": "2026-10-08",
"counterparty_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f"
}, { ifMatch: etag });response = xos.expenses.update("0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f", {"description": "Gaffer tape, 12 rolls", "amount_minor": 14388, "currency_code": "USD", "incurred_on": "2026-10-08", "counterparty_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f"}, if_match=etag)xos expenses update 0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f --data '{"description":"Gaffer tape, 12 rolls","amount_minor":14388,"currency_code":"USD","incurred_on":"2026-10-08","counterparty_id":"0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f"}' --if-match auto