Can online registration for self-enrollment of Shenzhen senior high school entrance examination in 2022 be cancelled and re-filled?

In 2022, online registration for self-enrollment of Shenzhen senior high school entrance examination can be cancelled and re-filled. After candidates save information (including enrollment schools), they need to confirm the registration information before the registration deadline. The system will send a verification code message to the candidate's guardian's mobile phone, and the candidate can successfully confirm it after entering the verification code. Each candidate has a maximum of three confirmation opportunities. Candidates can still modify and save the registration information before the third confirmation. After the third confirmation, the information filled in cannot be modified.