Dear Preeti,

Generally, the migration certificate is obtained from the previous institute you have studied in. You can contact the authority there or management team, they will provide you with the information regarding migration certificate.

But as of now, you haven't mentioned which institute/university are you talking about, I am unable to provide you with the best possible solution. So, Please drop your query with full information related to this else. We are always ready to help you out.

Regards.