layer was filled 91 crpc

oposite person only he was submited the income tax returns creating the outside not in ito office. but he was told cross examination I am a paint contractor I have no licence iam doing business since 30 years without licence iam running the business. only a piece of paper is submitted inside amount is 7400000/- how is it possible without licence he is running a business that's a big amount na please give some instructions objection points tell me sir.