For the time being for a particular purpose if all other documents except SSC certificate are identical and only SSC certificate spelling mistake, then you may be able to solve it by a notarised affidavit declaring that the person whose name is spelt differently in the documents(s) is same as so-and-so. Some organisations may accept some standard formats instead with attestation needed from some designated officials or MLA, MP etc.
However, if there is no urgency, then you may start approaching the concerned Board or authority office and know how it can be corrected.
There also you may need to produce proof for your correct name. There also they may need affidavit. If that is possible better get the SSC name corrected so that all documents have identical spelling of your name.
It is nowadays becoming very difficult ad any discrepancy of even a character or space is taken as big discrepancy and summarily rejected by many organisations. Things are now followed in 'letter' and not in 'spirit'. As the interface between the us is only machine, there is no platform for us to convince like we were doing early.