When I enter my I140 receipt number (which I got last week) at USCIS online case status website, I get this message: "Case Status Retrieval Failed. This Receipt Number cannot be found at this time in this automated system. Please check your case receipt number to see if it is correct. If you have questions or concerns about your case status, please contact the National Customer Service Center."
Does anyone know in what conditions this happens? Is there any need to worry?
Does anyone know in what conditions this happens? Is there any need to worry?