Hello candidate,

If your are asking about the Maharashtra CET-2019, then in order to retrieve your login id follow through the link provided below and fill all details. I am sure you will be able to retrieve your id and if not, please contact with the helpline number provided on their website-> https://mhtcet2019.mahaonline.gov.in/ForgotPassword/ForgotUsername

If this is a different test you are asking about, then please comment and I may help you.