:doc:`EntityResolution <../../entityresolution>` / Client / list_id_namespaces

******************
list_id_namespaces
******************



.. py:method:: EntityResolution.Client.list_id_namespaces(**kwargs)

  

  Returns a list of all ID namespaces.

  

  See also: `AWS API Documentation <https://docs.aws.amazon.com/goto/WebAPI/entityresolution-2018-05-10/ListIdNamespaces>`_  


  **Request Syntax**
  ::

    response = client.list_id_namespaces(
        nextToken='string',
        maxResults=123
    )
    
  :type nextToken: string
  :param nextToken: 

    The pagination token from the previous API call.

    

  
  :type maxResults: integer
  :param maxResults: 

    The maximum number of ``IdNamespace`` objects returned per page.

    

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

    
    ::

      {
          'idNamespaceSummaries': [
              {
                  'idNamespaceName': 'string',
                  'idNamespaceArn': 'string',
                  'description': 'string',
                  'idMappingWorkflowProperties': [
                      {
                          'idMappingType': 'PROVIDER'|'RULE_BASED'
                      },
                  ],
                  'type': 'SOURCE'|'TARGET',
                  'createdAt': datetime(2015, 1, 1),
                  'updatedAt': datetime(2015, 1, 1)
              },
          ],
          'nextToken': 'string'
      }
      
    **Response Structure**

    

    - *(dict) --* 
      

      - **idNamespaceSummaries** *(list) --* 

        A list of ``IdNamespaceSummaries`` objects.

        
        

        - *(dict) --* 

          A summary of ID namespaces.

          
          

          - **idNamespaceName** *(string) --* 

            The name of the ID namespace.

            
          

          - **idNamespaceArn** *(string) --* 

            The Amazon Resource Name (ARN) of the ID namespace.

            
          

          - **description** *(string) --* 

            The description of the ID namespace.

            
          

          - **idMappingWorkflowProperties** *(list) --* 

            An object which defines any additional configurations required by the ID mapping workflow.

            
            

            - *(dict) --* 

              The settings for the ID namespace for the ID mapping workflow job.

              
              

              - **idMappingType** *(string) --* 

                The type of ID mapping.

                
          
        
          

          - **type** *(string) --* 

            The type of ID namespace. There are two types: ``SOURCE`` and ``TARGET``.

             

            The ``SOURCE`` contains configurations for ``sourceId`` data that will be processed in an ID mapping workflow.

             

            The ``TARGET`` contains a configuration of ``targetId`` which all ``sourceIds`` will resolve to.

            
          

          - **createdAt** *(datetime) --* 

            The timestamp of when the ID namespace was created.

            
          

          - **updatedAt** *(datetime) --* 

            The timestamp of when the ID namespace was last updated.

            
      
    
      

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

        The pagination token from the previous API call.

        
  
  **Exceptions**
  
  *   :py:class:`EntityResolution.Client.exceptions.ThrottlingException`

  
  *   :py:class:`EntityResolution.Client.exceptions.InternalServerException`

  
  *   :py:class:`EntityResolution.Client.exceptions.AccessDeniedException`

  
  *   :py:class:`EntityResolution.Client.exceptions.ValidationException`

  