Question About My Temporary Social Security Identification Number

Bonjour,

I am an international student and I have recently returned to France to continue my studies at IMT Atlantique in Nantes.

During my previous stay in France, I applied for registration with Assurance Maladie and received a **temporary social security identification number** in Lyon. However, my application was later rejected because some information or documents needed to be corrected. I did not complete the correction at that time because I returned to Cambodia.

I am now back in France and would like to know what procedure I should follow.

Could you please confirm whether my **temporary social security identification number is still valid** and whether I can continue my previous application? Or do I need to submit a new application as an international student in Nantes?

I would also appreciate it if you could let me know which documents I need to provide to complete my registration.

Thank you very much for your assistance.

Kind regards,
Danin