The one and same certificate is used to declare that two (or more) names pertain to the same person. If a person uses multiple names in different documents, but without legally changing your name, then he/she has to submit this certificate, to declare that it is only he/she has used all those names (mention all variations of your name accurately in the document).
Supporting documents to be uploaded:
Time Frame to issue the Certificate:
5 days from the date of application
For a specified minimum period