These documents vary from state to state .... so the ones from kerala have no problem regarding this as cusat accepts them as they are ... but if u r in a diff state ... the income and community certificates are generally in Hindi or regional state language ... specially for north Indian states.... so get a bi-lingual copy ... or get it translated by Govt Authority ..... And one imp thing ... All certificates and proofs to be in ENGLISH / MALAYALAM ONLY.... no other language is approved .... so take care of that .... its clearly mentioned in the PDFs