:doc:`SFN <../../stepfunctions>` / Client / list_state_machine_versions

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list_state_machine_versions
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.. py:method:: SFN.Client.list_state_machine_versions(**kwargs)

  

  Lists `versions <https://docs.aws.amazon.com/step-functions/latest/dg/concepts-state-machine-version.html>`__ for the specified state machine Amazon Resource Name (ARN).

   

  The results are sorted in descending order of the version creation time.

   

  If ``nextToken`` is returned, there are more results available. The value of ``nextToken`` is a unique pagination token for each page. Make the call again using the returned token to retrieve the next page. Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination token will return an *HTTP 400 InvalidToken* error.

   

  **Related operations:**

   

  
  *  PublishStateMachineVersion
   
  *  DeleteStateMachineVersion
  

  

  See also: `AWS API Documentation <https://docs.aws.amazon.com/goto/WebAPI/states-2016-11-23/ListStateMachineVersions>`_  


  **Request Syntax**
  ::

    response = client.list_state_machine_versions(
        stateMachineArn='string',
        nextToken='string',
        maxResults=123
    )
    
  :type stateMachineArn: string
  :param stateMachineArn: **[REQUIRED]** 

    The Amazon Resource Name (ARN) of the state machine.

    

  
  :type nextToken: string
  :param nextToken: 

    If ``nextToken`` is returned, there are more results available. The value of ``nextToken`` is a unique pagination token for each page. Make the call again using the returned token to retrieve the next page. Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination token will return an *HTTP 400 InvalidToken* error.

    

  
  :type maxResults: integer
  :param maxResults: 

    The maximum number of results that are returned per call. You can use ``nextToken`` to obtain further pages of results. The default is 100 and the maximum allowed page size is 1000. A value of 0 uses the default.

     

    This is only an upper limit. The actual number of results returned per call might be fewer than the specified maximum.

    

  
  
  :rtype: dict
  :returns: 
    
    **Response Syntax**

    
    ::

      {
          'stateMachineVersions': [
              {
                  'stateMachineVersionArn': 'string',
                  'creationDate': datetime(2015, 1, 1)
              },
          ],
          'nextToken': 'string'
      }
      
    **Response Structure**

    

    - *(dict) --* 
      

      - **stateMachineVersions** *(list) --* 

        Versions for the state machine.

        
        

        - *(dict) --* 

          Contains details about a specific state machine version.

          
          

          - **stateMachineVersionArn** *(string) --* 

            The Amazon Resource Name (ARN) that identifies a state machine version. The version ARN is a combination of state machine ARN and the version number separated by a colon (:). For example, ``stateMachineARN:1``.

            
          

          - **creationDate** *(datetime) --* 

            The creation date of a state machine version.

            
      
    
      

      - **nextToken** *(string) --* 

        If ``nextToken`` is returned, there are more results available. The value of ``nextToken`` is a unique pagination token for each page. Make the call again using the returned token to retrieve the next page. Keep all other arguments unchanged. Each pagination token expires after 24 hours. Using an expired pagination token will return an *HTTP 400 InvalidToken* error.

        
  
  **Exceptions**
  
  *   :py:class:`SFN.Client.exceptions.ValidationException`

  
  *   :py:class:`SFN.Client.exceptions.InvalidArn`

  
  *   :py:class:`SFN.Client.exceptions.InvalidToken`

  