Why can't I find the old social security?

Why can't I find my old social security?

1, your company didn't pay the endowment insurance for you;

2. Change the location of endowment insurance. If you change jobs in the city and apply for social security transfer, the social security transfer between the two places is generally completed within 60 working days, which may not be found at this time;

3. The registration information is incorrect. If my ID number is registered incorrectly when registering, I can't find it;

4. Some state-owned enterprises have not been handed over in the city, and may not be found, and some have not been found once every six months.