The request has been accepted for processing, but the processing has not been completed. The request might or might not be eventually acted upon, as it might be disallowed when processing actually takes place. There is no facility for re-sending a status code from an asynchronous operation such as this.
The 202 response is intentionally non-committal. Its purpose is to allow a server to accept a request for some other process (perhaps a batch-oriented process that is only run once per day).The user agent does not have to be connected to the server till the end of the process. The entity returned with this response SHOULD include an indication of the current status of the request and whether a pointer to a status Monitor or an estimation of when the user can expect the implementing of the request to be over.