Consult whether to enter family planning information.

Maybe it's because your own mother once had relevant records on family planning, such as whether she has given birth to more than one child. Even though she has been divorced for many years, this information may still be kept in the files of the family planning office.

In addition, the ID number is everyone's unique personal identification number, and the family planning office may need to use your mother's ID number to verify her personal information and identity. If you are worried about this problem, you can contact the family planning office with your stepmother to find out the specific situation, or consult the relevant local departments or lawyers.