1. When the network connection is normal, check whether the network settings are normal.

2. Confirm whether the bank balance is sufficient to withhold tax.

3. Check whether the bank account is frozen abnormally, and you can contact the bank to solve it.

4. If there are prompts such as "The system can't work at present", "The acceptance time of this kind of business" and "The local service of the tax treasury bank failed", you can pay attention to whether the tax authorities have issued a prompt to suspend the tax treasury banking business or contact the service provider.