Hello Aspirant,

If only the first letter of your grandfather's name is wrong on the income certificate, it is generally a minor clerical mistake and will not create problems in most situations. But if you use this certificate for official verification (scholarship, government jobs, caste/income benefits, etc), then authorities might ask for correction to avoid mismatched. It is safer to apply for correction/re-issue at issuing authority (Tahsildar/Revenue office) to make all the documents uniform.