Matriculation Certificate is the most important document in the line of degrees and certificates. It shows one's date of birth and consists of the other necessary particulars. So, this must be presented or submitted. One must submit application in BISE and get the duplicate one as soon as possible.
But, would you specify here for what purpose you want to submit it and where. May be, any suggestion can be given in that particular case.

__________________
"But screw your courage to the sticking place,
And we'll not fail." _Shakespeare, 'Macbeth')