Contact the local tax authorities or tax service center for consultation and handling. According to the regulations of State Taxation Administration of The People's Republic of China, People's Republic of China (PRC), the general VAT invoice is valid for one year, and can no longer be used as a tax payment certificate after its expiration. If you fail to declare in time or make mistakes when using the electronic VAT invoice, so that you can't declare next year, I suggest you contact the local tax authorities or tax service center as soon as possible and ask them how to deal with this problem. Under normal circumstances, if you can provide relevant supporting materials and filing records, the tax authorities may verify them according to the actual situation to help you solve the problem. If it can't be solved, you may have to bear the corresponding tax risks and responsibilities. I suggest you communicate and negotiate with the tax department as soon as possible.