# HTTP status codes

> The HTTP status codes the Shoplazza REST API returns, what each one means, and the error payload your app gets back when a request fails.

## Shoplazza API response status and error codes

The following table provides an overview of common HTTP status codes and their meanings when interacting with the Shoplazza API:

  
    
      
        **Status Code**
      

      
        **Details**
      
    
  

  
    
      
        **200 OK**
      

      
        The request was successfully processed by Shoplazza.
      
    

    
      
        **400 Bad Request**
      

      
        The request wasn't understood by the server, generally due to bad syntax or because the `Content-Type` header wasn't set to `application/json`.  - Returned when a request is missing valid authentication credentials or the credentials provided are invalid.  - Returned when the request includes invalid input format or request structure (e.g., missing required fields or incorrect data types).
      
    

    
      
        **401 Unauthorized**
      

      
        The necessary authentication credentials are not present in the request or are incorrect.
      
    

    
      
        **403 Forbidden**
      

      
        The server is refusing to respond to the request. This status is generally returned if the application hasn't requested the appropriate scope for the action.
      
    

    
      
        **404 Not Found**
      

      
        The requested resource was not found.
      
    

    
      
        **405 Method Not Allowed**
      

      
        The server recognizes the request but rejects the specific HTTP method. 
      
    

    
      
        **406 Not Acceptable**
      

      
        the server cannot produce a response that matches the client's request, e.g. refund an order which is not in after-sale status.
      
    

    
      
        **422 Unprocessable Entity**
      

      
        The request parameters are formatted incorrectly. Common causes for this error include:\
        Incorrect parameter types: For example, the published\_status parameter has an invalid value.\
        Incorrect time format: The created\_at\_min, created\_at\_max, updated\_at\_min, updated\_at\_max, published\_at\_min, and published\_at\_max parameters do not follow the correct time format.\
        Invalid parameter values: For instance, the ids parameter is non-existent or has an incorrect format.\
        Internal server error: In rare cases, the server itself may encounter an issue and return a 422 error.
      
    

    
      
        **429 Too Many Requests**
      

      
        The request was not accepted because the application has exceeded the API rate limit. Adjust request frequency. Learn more about[ Shoplazza's API rate limits](/docs/app/building-blocks/rest-api/rate-limits).
      
    

    
      
        **500 Internal Server Error**
      

      
        An internal error occurred in Shoplazza. Simplify or retry your request. If the issue persists, record any error codes and timestamps and contact Partner Support for assistance.