2. If there is an error, there is a proportion. If it is within the proportion, you can submit an explanation to explain the situation of not writing off, and consult the local safe for the specific proportion (most of them will be approved).

3. If it doesn't belong to the above two situations, it is likely to be handed over to the inspection organ of foreign exchange management.

But most of the situations can be explained.

I hope my answer can help you!