Legal analysis: the tax return shows that the failure of declaration usually has the following reasons:

1. The enterprise has declared the corresponding taxes and fees. Re-declaration will lead to repeated declaration.

2. The enterprise has passed the reporting period. In this case, it is necessary to go to the tax bureau to declare at home.

3. The enterprise software has not been upgraded, and the old version cannot be used.

4, enterprise network reasons, network errors.

5. Due to the systematic reasons of the tax bureau, the data is unacceptable.

Legal basis: Article 25 of the Law of People's Republic of China (PRC) on Tax Collection and Administration, taxpayers must truthfully file tax returns, submit tax returns, financial and accounting statements and other tax payment materials required by tax authorities according to actual needs in accordance with the provisions of laws and administrative regulations or the time limit and content of filing determined by tax authorities in accordance with the provisions of laws and administrative regulations.