
There are several reasons why you may not be able to register your vehicle on Traffic Management 12123: 1. Information delay: After purchasing a new car, there might be a synchronization delay in the information. Generally, you can check it on 12123 after waiting for about half a month; 2. The number of vehicle registrations exceeds the maximum limit: Traffic Management 12123 requires that each user can only register 3 vehicles not under their name, and the same vehicle can be registered by 3 other people besides the owner; 3. The vehicle is already bound: If the original owner has already bound this vehicle during the sale of a used car, you need to ask the original owner to unbind it before you can register it again.

I just encountered this issue too. Most likely, the failure to file is due to poor network connection or an outdated app. I frequently use 12123, and in my experience, multiple failures often stem from weak mobile signals or slow server responses. It's advisable to connect to a stable WiFi and try again, and check if the app version is up to date. If the system is under maintenance, wait for a while and retry later, as peak hours often experience lag. Another possibility is incorrect information input, such as a mismatched license plate number. Be sure to cross-check with the vehicle registration certificate and enter every character accurately. If all else fails, contacting customer service or visiting an offline service center is more reliable—don’t delay your vehicle needs.

I often use the vehicle management app to handle procedures, and filing failures are usually due to insufficient attention to details. For example, the ID number may have an extra digit or missing numbers, or the engine code might be copied incorrectly. Carefully verify all fields step by step before submitting to avoid rushing and making mistakes. Additionally, server overload can cause timeout issues, so it's recommended to try during off-peak hours like early morning or late evening. I've also encountered cache problems—clearing the app data or reinstalling might help. If you've just purchased a new car, the system may take a few days to update the data before allowing filing, so just be patient.

With years of experience in vehicle affairs, common reasons for failing to file include system anomalies or vehicle data conflicts. Check if the app is logged in properly; try logging out and back in. Errors in the Vehicle Identification Number (VIN) often cause trouble, so ensure the chassis number matches exactly without the slightest discrepancy. Additionally, updating the system version or trying a different phone can sometimes be effective. If the issue persists, call 122 for feedback—they can help check backend problems.


