Executes an activity non-interactively and retrieves its output.
| Name | Description | Default | 
|---|---|---|
            id
           | 
          Unique activity ID, activity name or GUID. | 
        Content Type: 
        application/xml
         or 
        application/json
        
Key/value pairs representing the input to the activity.
| XML JSON | 
|---|
            <Request>                    <!--Array of 'Item'--> 
  <Item>                     
    <Name>string</Name>      
    <Value>object</Value>    
  </Item>                    
</Request>                   
           | 
        
            [{                      
   "Name": "string",    
   "Value": "object"    
}]                      
                        
           | 
        
      Content Type: 
      application/xml
       or 
      application/json
      
Key/value pairs representing the output from the activity (if any).
| XML JSON | 
|---|
          <Response>                     
  <Result>                     <!--Array of 'Item'--> 
    <Item>                     
      <Name>string</Name>      
      <Value>object</Value>    
    </Item>                    
  </Result>                    
  <Message>string</Message>    <!--Error message--> 
</Response>                    
         | 
      
          {                          
   "Result": [{            
      "Name": "string",    
      "Value": "object"    
   }],                     
   "Message": "string"     // Error message
}                          
                           
         | 
      
| Code | Condition | 
|---|---|
| 200 OK | The operation completed successfully. | 
| 400 Bad Request | Invalid activity. | 
| 401 Unauthorized | Access token is invalid, expired or not specified. | 
| 403 Forbidden | User does not have permission to start the activity. | 
| 404 Not Found | Activity not found. | 
| 406 Not Acceptable | Content type specified in the Accept header isn't supported. | 
| 409 Conflict | The activity was cancelled. | 
| 500 Internal Server Error | An internal error occurred. | 
Only activities which are explicitly marked 'non-interactive' can be executed using this method.
The input, output and internal behaviour of an activity are determined by the activity type.