---
title: "Mutate checkin line items in a batch"
method: POST
path: "/v1/checkins/{id}/line-items/batch"
tags: ["Checkins"]
---

# Mutate checkin line items in a batch

`POST /v1/checkins/{id}/line-items/batch`

## Request

- Base URL: `https://api.officina.it`
- URL: `https://api.officina.it/v1/checkins/{id}/line-items/batch`
- Auth: HTTP bearer

Adds, updates, and removes the checkin's line items in a single
atomic diff, then returns the full checkin with the updated
`line_items` array. The top-level checkin PATCH is metadata-only;
all line-item mutation flows through this endpoint.

Checkin line items are description-only notes, so this batch is
narrower than the worksheet/quote one: the only field is
`description`, and there is no `reorder` operation (the rows have
no position). As with worksheets/quotes, `update` is applied as a
remove+add internally, so an updated line receives a NEW id in the
response. An id may appear in at most one of `remove`/`update`.

All arrays are optional; an empty body is a no-op.

## Request body

- CheckinLineItemsBatchRequest: Body of `POST /v1/checkins/{id}/line-items/batch`. Applies a single diff against the checkin's current line items and returns the full checkin. Narrower than the worksheet/quote batch: no `reorder` (rows have no position), description-only fields. All arrays are optional; an empty body is a no-op. An id may appear in at most one of `remove`/`update`, and ids in `remove`/`update` must belong to the target checkin.
  - `add` CheckinLineItemInput[]
    - `description` string, required: Required, non-empty.
  - `update` CheckinLineItemUpdate[]
    - `description` string, required: Required, non-empty.
    - `id` string, required
  - `remove` string[]: Ids of line items to delete.

## Response `200`

Batch applied. Returns the updated checkin (with `line_items`).

- Checkin: A vehicle intake / inspection snapshot. Belongs to one company, one customer, and one vehicle. List responses omit `line_items` to keep payloads small; detail responses populate it.
  - `object` 'checkin', required
  - `id` string, required
  - `seq_number` integer, required: Per-company human-readable sequence (e.g. "Checkin #142"). Assigned at create time and stable afterwards.
  - `status` 'active' | 'completed', required: Lifecycle state. Mutated only through `POST /v1/checkins/{id}/transitions`, never via PATCH.
  - `title` string, nullable
  - `comments` string, nullable
  - `internal_comments` string, nullable: Notes visible only to workshop staff.
  - `customer_id` string, required
  - `vehicle_id` string, required
  - `work_category_id` string, nullable
  - `worksheet_id` string, nullable: Set when the checkin has been converted into a worksheet.
  - `quote_id` string, nullable: Set when the checkin has been converted into a quote.
  - `fuel_level` integer, nullable: Free-form integer captured at intake. Convention is 0–100 (percentage) but the API enforces no bounds today.
  - `section1` string, nullable
  - `section2` string, nullable
  - `section3` string, nullable
  - `section4` string, nullable
  - `section5` string, nullable
  - `section6` string, nullable
  - `section7` string, nullable
  - `section8` string, nullable
  - `km` number, nullable: Odometer reading at intake.
  - `created_by` string, required: User id of the staff member who created the checkin.
  - `customer_name` string, required: Denormalized display string of the linked customer. Pre-computed on the entity for list-row rendering without a second request.
  - `vehicle_name` string, required: Denormalized display string of the linked vehicle.
  - `vehicle_license` string, nullable
  - `work_category_name` string, nullable
  - `work_category_ids` string[], required: Every work category ("categoria") of the document, in the order chosen. `work_category_id` (kept for clients that handle a single category) always equals the first. `[]` when the document has none, never null. Available since revision 2026-10-03.
  - `work_categories` WorkCategory[], required: The same list as `work_category_ids` with each category's name, same order. `work_category_name` is the first one's name. Available since revision 2026-10-03.
    - `object` 'work_category', required
    - `id` string, uuid, required
    - `name` string, required
  - `delivered_at` string, date-time, nullable
  - `created_at` string, date-time, required
  - `updated_at` string, date-time, required
  - `deleted_at` string, date-time, nullable: Soft-deletion timestamp. Populated on the response from DELETE /v1/checkins/{id}. Checkins with a non-null deleted_at are not returned by list/detail endpoints — this field appears for the delete response only.
  - `line_items` CheckinLineItem[], nullable: Embedded line items (description-only notes). Populated on detail / batch responses; list GET emits `null` to keep payloads small. Mutate via POST /v1/checkins/{id}/line-items/batch.
    - `object` 'checkin_line_item', required
    - `id` string, required
    - `description` string, required
    - `created_at` string, date-time, required

## Other responses

- `400`: Request body is unparseable or X-API-Version is missing.
- `401`: Missing, malformed, expired, or wrong-audience bearer token.
- `402`: The company has no active subscription, or its plan does not include API access. API access is included in the Business and Illimitato plans.
- `403`: The authenticated user lacks the required permission.
- `404`: Resource does not exist OR belongs to a different company. The two cases are intentionally indistinguishable.
- `415`: Content-Type is not `application/json`, or Accept rejects JSON.
- `422`: A request field is missing or invalid (fast-fail).
- `500`: Unhandled server error. Detail is logged, not exposed.

---

[API](https://skmtc.dev/officina/apis/officina-it-api.md) · [All operations](https://skmtc.dev/officina/apis/officina-it-api/llms.txt) · [OpenAPI document](https://skmtc.dev/officina/apis/officina-it-api/revisions/7da3fccfe551?raw)