---
title: "Änderungssatz öffnen"
description: "Eine Änderung starten, die sich über mehrere Aufrufe erstreckt und als ein Verlaufseintrag gespeichert wird."
canonical: "https://atelier201.com/docs/de/api/changesets/open"
updated: "2026-11-06"
---

# Änderungssatz öffnen

Erfordert `sites:write`. Kostet keine Credits.

Ein Änderungssatz umfasst vier Schritte: Öffnen, [Dateien vormerken](/docs/api/changesets/patch) und anschließend [übernehmen](/docs/api/changesets/commit) oder [verwerfen](/docs/api/changesets/abandon). Er bleibt 10 Minuten geöffnet und wird danach übernommen, wenn er gültig ist, andernfalls verworfen.

Verwenden Sie einen Änderungssatz, wenn eine Änderung mehrere Aufrufe erfordert, etwa für eine neue Seite samt Inhalt und Bild. Ein einzelner Aufruf, der mehrere Dateien ändert, benötigt keinen Änderungssatz: [Dateien ändern](/docs/api/files/commit) erstellt bereits einen Verlaufseintrag.

```http
POST https://api.atelier201.com/v1/sites/{site_id}/changesets
```

## Authorizations

- `Authorization` (bearer, in header, required)

## Path parameters

- `site_id` (`string`, required): ID der Website oder ihr Slug (die Adresse vor .atelier201.page).

## Body

`application/json`, required

- `summary` (`string`, required, length: `1–500 chars`)
- `base_revision` (`string`, length: `40–40 chars`): Eine Git-Commit-ID (40 hexadezimale Zeichen) des Repositorys der Website.

## Response

**201**: Changeset öffnen

- `data` (`object`, required)
- `data.id` (`string`, required)
- `data.changeset_id` (`string`, required): Die IDs, die stage_changes, commit_changeset und abandon_changeset annehmen, sind dieselben wie id.
- `data.base_revision` (`string`, required, length: `40–40 chars`): Eine Git-Commit-ID (40 hexadezimale Zeichen) des Repositorys der Website.
- `data.expires_at` (`string`, required): ISO 8601, UTC.
- `request_id` (`string`, required)

```json
{
  "data": {
    "id": "<string>",
    "changeset_id": "<string>",
    "base_revision": "<string>",
    "expires_at": "<string>"
  },
  "request_id": "<string>"
}
```

**400**: Mögliche Codes: invalid_request, unknown_field, invalid_parameter, invalid_cursor

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**401**: Mögliche Codes: authentication_required, invalid_api_key, api_key_expired, api_key_revoked

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**402**: Mögliche Codes: insufficient_credits

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**403**: Mögliche Codes: insufficient_scope, feature_not_available, admin_required

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**404**: Mögliche Codes: resource_not_found

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**409**: Mögliche Codes: conflict, result_not_ready, idempotency_key_reused

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**410**: Mögliche Codes: result_expired

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**413**: Mögliche Codes: request_too_large

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**422**: Mögliche Codes: request_too_large_for_plan

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**429**: Mögliche Codes: rate_limited

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**500**: Mögliche Codes: internal_error

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**503**: Mögliche Codes: service_unavailable

- `error` (`object`, required)
- `error.type` (`string`, required)
- `error.code` (`string`, required)
- `error.message` (`string`, required)
- `error.param` (`string`)
- `error.docs_url` (`string`, required)
- `error.action_url` (`string<uri>`)
- `error.details` (`Record<string, object>`)
- `request_id` (`string`, required)

```json
{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "docs_url": "<string>",
    "action_url": "<string>",
    "details": {}
  },
  "request_id": "<string>"
}
```

**Example request**

```bash
curl --request POST \
  --url 'https://api.atelier201.com/v1/sites/<site_id>/changesets' \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "summary": "<string>"
}'
```