# trips.update

Rename a trip or change its dates or place with id, the fields to change and an idempotencyKey. A trip a person edited is never rewritten by Oatmilk. Finance access required.

`POST /api/v1/accounting/trips.update`

Permissions: `accounting:read`, `accounting:write` · Roles: admin, finance · Idempotency key required · Send `expectedRevision`

MCP tool: `accounting_trips_update`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `id` | string (ID) | Yes | The record's ID. |
| `title` | string |  | A short title. 1–200 characters. |
| `startDate` | string |  | A date, as YYYY-MM-DD. Date as YYYY-MM-DD. |
| `endDate` | string or null |  |  |
| `placeLabel` | string or null |  |  |
| `expectedRevision` | integer |  | The record's current revision, from the last time you read it. If someone changed the record since, the request is refused with a conflict so you can reload and check before trying again. at most 9007199254740991; greater than 0. |
| `idempotencyKey` | string | Yes | Any unique text you generate once per intended change, so a retried request only happens once. Send it as the Idempotency-Key header instead if you prefer; if you send both they must match. 8–200 characters. |

## Example request

```bash
curl https://app.getoatmilk.com/api/v1/accounting/trips.update \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "id": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
  "title": "Synthetic services agreement"
}'
```

Reference page: https://app.getoatmilk.com/docs/api/trips.update