If you've discovered a spelling mistake on your SSC certificate and need to apply for a passport, don't worry. You can rectify this by taking steps for name reconciliation or a name change. This may involve executing an affidavit for the spelling error or, if the names are significantly different, obtaining a gazette notification for the name change through your Tahsildar. It's important to ascertain the correct spelling and the document you'll use as proof before proceeding with the correction procedure.