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

# 获取开始表单密钥

> Retrieves the key of the start form for the latest version of the process definition
which belongs to no tenant.
The form key corresponds to the `FormData#formKey` property in the engine.



## OpenAPI

````yaml GET /process-definition/key/{key}/startForm
openapi: 3.0.2
info:
  title: ORION Platform REST API
  description: OpenApi Spec for ORION Camunda Platform REST API.
  version: 7.22.6-ee
  license:
    name: Apache License 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
servers:
  - url: http://{host}:{port}/{contextPath}
    description: The API server for the default process engine
    variables:
      host:
        default: localhost
      port:
        default: '8080'
      contextPath:
        default: engine-rest
  - url: http://{host}:{port}/{contextPath}/engine/{engineName}
    description: The API server for a named process engine
    variables:
      host:
        default: localhost
      port:
        default: '8080'
      contextPath:
        default: engine-rest
      engineName:
        default: default
  - url: '{url}'
    description: The API server with a custom url
    variables:
      url:
        default: ''
security:
  - basicAuth: []
tags:
  - name: Authorization
  - name: Batch
  - name: Condition
  - name: Decision Definition
  - name: Decision Requirements Definition
  - name: Deployment
  - name: Engine
  - name: Event Subscription
  - name: Execution
  - name: External Task
  - name: Filter
  - name: Group
  - name: Historic Activity Instance
  - name: Historic Batch
  - name: Historic Decision Definition
  - name: Historic Decision Instance
  - name: Historic Decision Requirements Definition
  - name: Historic Detail
  - name: Historic External Task Log
  - name: Historic Identity Link Log
  - name: Historic Incident
  - name: Historic Job Log
  - name: Historic Process Definition
  - name: Historic Process Instance
  - name: Historic Task Instance
  - name: Historic User Operation Log
  - name: Historic Variable Instance
  - name: History Cleanup
  - name: Identity
  - name: Incident
  - name: Job
  - name: Job Definition
  - name: Message
  - name: Metrics
  - name: Migration
  - name: Modification
  - name: Process Definition
  - name: Process Instance
  - name: Signal
  - name: Schema Log
  - name: Task
  - name: Task Attachment
  - name: Task Comment
  - name: Task Identity Link
  - name: Task Local Variable
  - name: Task Variable
  - name: Telemetry
  - name: Tenant
  - name: User
  - name: Variable Instance
  - name: Version
externalDocs:
  description: Find out more about ORION Rest API
  url: https://docs.eorion.com
paths:
  /process-definition/key/{key}/startForm:
    get:
      tags:
        - Process Definition
      summary: Get Start Form Key
      description: >-
        Retrieves the key of the start form for the latest version of the
        process definition

        which belongs to no tenant.

        The form key corresponds to the `FormData#formKey` property in the
        engine.
      operationId: getStartFormByKey
      parameters:
        - name: key
          in: path
          schema:
            type: string
          required: true
          description: >-
            The key of the process definition (the latest version thereof) for
            which the form key is to be retrieved.
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FormDto'
              examples:
                example-1:
                  summary: Status 200 Response
                  description: GET `process-definition/key/aKey/startForm`
                  value:
                    key: aFormKey
                    contextPath: http://localhost:8080/my-process-application/
          description: Request successful.
        '400':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExceptionDto'
          description: >-
            Process definition has no start form defined. See the

            [Introduction](https://docs.camunda.org/manual/7.22/reference/rest/overview/#error-handling)

            for the error response format.
        '404':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExceptionDto'
          description: >-
            Process definition with given key does not exist. See the

            [Introduction](https://docs.camunda.org/manual/7.22/reference/rest/overview/#error-handling)

            for the error response format.
components:
  schemas:
    FormDto:
      title: FormDto
      type: object
      properties:
        key:
          type: string
          nullable: true
          description: The form key.
        camundaFormRef:
          $ref: '#/components/schemas/CamundaFormRef'
        contextPath:
          type: string
          nullable: true
          description: >-
            The context path of the process application. If the task (or the
            process definition) does not

            belong to a process application deployment or a process definition
            at all, this

            property is not set.
    ExceptionDto:
      title: ExceptionDto
      type: object
      properties:
        type:
          type: string
          nullable: true
          description: An exception class indicating the occurred error.
        message:
          type: string
          nullable: true
          description: A detailed message of the error.
        code:
          type: number
          description: >-
            The code allows your client application to identify the error in an
            automated fashion.

            You can look up the meaning of all built-in codes and learn how to
            add custom codes

            in the [User
            Guide](https://docs.camunda.org/manual/7.22/user-guide/process-engine/error-handling/#exception-codes).
    CamundaFormRef:
      type: object
      properties:
        key:
          type: string
          nullable: true
          description: The key of the Camunda Form.
        binding:
          type: string
          nullable: true
          description: >-
            The binding of the Camunda Form. Can be `latest`, `deployment` or
            `version`.
        version:
          type: integer
          format: int32
          nullable: true
          description: >-
            The specific version of a Camunda Form. This property is only set if
            `binding` is `version`.
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic

````