> ## Documentation Index
> Fetch the complete documentation index at: https://docs.niadra.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Roll back a change

> Goes back to the previous version of a configuration, as a new diff.



## OpenAPI

````yaml openapi/en/control.json POST /v1/config/diffs/{diff_id}/rollback
openapi: 3.1.0
info:
  title: Niadra control API
  version: '1'
  description: >-
    Tenants, projects, sources, keys, people, configuration and usage. It never
    receives customer content.
servers:
  - url: https://control.api.niadra.com
security: []
paths:
  /v1/config/diffs/{diff_id}/rollback:
    post:
      summary: Roll back a change
      description: >-
        Puts back the document as it was before an applied diff. The rollback is
        recorded as a new diff with `rollback_of` and applies at once, because
        it restores a state that was already approved. It is refused when a
        later diff changed the same document.


        **Authentication.** Person token issued by the control plane
        (`Authorization: Bearer <JWT>`), with the role the operation needs.
      operationId: rollback_diff_v1_config_diffs__diff_id__rollback_post
      parameters:
        - in: path
          name: diff_id
          required: true
          schema:
            format: uuid
            title: Diff Id
            type: string
          example: 0192f7b2-6071-7283-9e94-0f1a2b3c4d56
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RollbackRequest'
            example:
              reason: The CRM endpoint answered 500 to every delivery
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DiffOut'
              example:
                diff_id: 0192f7b2-6071-7283-9e94-0f1a2b3c4d57
                space_id: 0192f0a0-3d4e-7f50-8b61-7c8d9e0f1a23
                type: webhook-endpoints
                document: []
                reason: The CRM endpoint answered 500 to every delivery
                status: applied
                base_version: 8
                applied_version: 9
                author_id: 0192f0a0-4e5f-7061-9c72-8d9e0f1a2b34
                author_label: null
                created_at: '2026-09-22T19:00:00Z'
                decided_at: '2026-09-22T19:00:00Z'
                decided_by: 0192f0a0-4e5f-7061-9c72-8d9e0f1a2b34
                rollback_of: 0192f7b2-6071-7283-9e94-0f1a2b3c4d56
          description: The rollback diff, already applied.
        '422':
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/Problem'
          description: The request does not match the contract.
      security:
        - personToken: []
components:
  schemas:
    RollbackRequest:
      additionalProperties: false
      properties:
        reason:
          maxLength: 1000
          minLength: 3
          title: Reason
          type: string
      required:
        - reason
      title: RollbackRequest
      type: object
    DiffOut:
      additionalProperties: false
      properties:
        applied_version:
          anyOf:
            - type: integer
            - type: 'null'
          title: Applied Version
          description: The version the diff created when it was applied.
        author_id:
          anyOf:
            - format: uuid
              type: string
            - type: 'null'
          title: Author Id
        author_label:
          anyOf:
            - type: string
            - type: 'null'
          title: Author Label
          description: Set when a cell proposed the diff, such as `assistant@cell-1`.
        base_version:
          title: Base Version
          type: integer
          description: >-
            The configuration version the diff was written against. A diff
            written against an outdated document is refused at approval.
        created_at:
          format: date-time
          title: Created At
          type: string
        decided_at:
          anyOf:
            - format: date-time
              type: string
            - type: 'null'
          title: Decided At
        decided_by:
          anyOf:
            - format: uuid
              type: string
            - type: 'null'
          title: Decided By
        diff_id:
          format: uuid
          title: Diff Id
          type: string
        document:
          title: Document
        reason:
          title: Reason
          type: string
        rollback_of:
          anyOf:
            - format: uuid
              type: string
            - type: 'null'
          title: Rollback Of
          description: The diff this one rolled back.
        space_id:
          format: uuid
          title: Space Id
          type: string
        status:
          $ref: '#/components/schemas/DiffStatus'
        type:
          title: Type
          type: string
      required:
        - diff_id
        - space_id
        - type
        - status
        - reason
        - base_version
        - author_id
        - author_label
        - decided_by
        - decided_at
        - applied_version
        - rollback_of
        - created_at
        - document
      title: DiffOut
      type: object
    Problem:
      additionalProperties: false
      description: RFC 9457 problem details; `code` comes from the versioned error catalog.
      properties:
        code:
          title: Code
          type: string
        detail:
          anyOf:
            - type: string
            - type: 'null'
          default: null
          title: Detail
        request_id:
          anyOf:
            - type: string
            - type: 'null'
          default: null
          title: Request Id
        status:
          title: Status
          type: integer
        title:
          title: Title
          type: string
        type:
          default: about:blank
          title: Type
          type: string
      required:
        - title
        - status
        - code
      title: Problem
      type: object
    DiffStatus:
      enum:
        - pending
        - proposed
        - applied
        - rejected
      title: DiffStatus
      type: string
  securitySchemes:
    personToken:
      type: http
      scheme: bearer
      bearerFormat: JWT

````