What should I do if I forget to declare when adding or subtracting? How to fill in Schedule 4?

Good morning, dear. I'm happy to answer your question. Add and subtract and forget to declare; You can log in to the Shanghai Electronic Taxation Bureau in State Taxation Administration of The People's Republic of China, click on I want to declare comprehensive tax information-declaration of qualification information-explanation of application of additional deduction policy, and follow the prompts to fill in: 1 policy application year: select 2022; Industry: choose according to the actual situation of the enterprise; 3 from the validity period to the validity period, automatically brought out; 4 Sales of four services and total sales: According to the reported sales, the system automatically calculates the proportion to judge whether the taxpayer meets the policy requirements. After the submission process is successful, please go back and click menu-Account-Update Verification, download the update again, and then add and subtract.