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

# Cancel contract signatures

> Cancels the signature process of a contract in signing, as the "Cancel signature" action in the app does: the contract goes back to negotiating and participants are notified. Call it when the signature will not finish in the third-party tool (canceled, refused or expired).



## OpenAPI

````yaml /openapi-2025-01-29.alpha.json post /contracts/{id}/cancel-signatures
openapi: 3.0.0
info:
  title: Tomorro API
  description: >
    The Tomorro Public API enables you to programmatically manage contracts,
    members, and counterparties. Build powerful integrations that automate your
    contract management workflows.


    ## API Version: 2025-01-29.alpha


    This documentation is for API version `2025-01-29.alpha`.


    ### Using this version

    ```

    curl -X GET https://api.tomorro.com/members \
      -H "x-api-key: YOUR_API_KEY" \
      -H "tomorro-version: 2025-01-29.alpha"
    ```
  version: 2025-01-29.alpha
  contact: {}
servers:
  - url: https://api.tomorro.com/v2
    description: Production
  - url: https://api.demo.tomorro.com/v2
    description: Demo
  - url: http://localhost:3015
    description: Local Development
security: []
tags: []
paths:
  /contracts/{id}/cancel-signatures:
    post:
      tags:
        - Contracts
      summary: Cancel contract signatures
      description: >-
        Cancels the signature process of a contract in signing, as the "Cancel
        signature" action in the app does: the contract goes back to negotiating
        and participants are notified. Call it when the signature will not
        finish in the third-party tool (canceled, refused or expired).
      operationId: ContractController_cancelSignatures
      parameters:
        - name: id
          required: true
          in: path
          description: The unique identifier (UUID) of the contract
          schema:
            example: 550e8400-e29b-41d4-a716-446655440000
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ContractCancelSignaturesDto'
      responses:
        '204':
          description: Signature process canceled
        '400':
          description: >-
            The contract is not in signing: it was never sent for signature, is
            already signed, or is canceled.
        '401':
          description: Unauthorized - Invalid or missing API key
        '403':
          description: Forbidden - Insufficient permissions
        '429':
          description: Too Many Requests - Rate limit exceeded
      security:
        - X-API-KEY: []
components:
  schemas:
    ContractCancelSignaturesDto:
      type: object
      properties:
        cancelReason:
          type: string
          description: >-
            Why the signature process did not finish (canceled, refused or
            expired in the signature tool). Shown to the participants; values
            over 255 characters are truncated. Send `null` when there is none.
          example: Envelope expired in the signature tool.
          nullable: true
      required:
        - cancelReason
      additionalProperties: false
  securitySchemes:
    X-API-KEY:
      type: apiKey
      in: header
      name: x-api-key
      description: >-
        API key for authentication. Get your key at
        https://app.tomorro.com/settings/integrations?integration=api-key

````