The report of the tax audit conducted by the chartered accountant is to be furnished in the prescribed form. The form prescribed for audit report in respect of audit conducted under section 44AB is Form No. 3CB and the prescribed particulars are to be reported in Form No. 3CD.
In case of persons covered under previous FAQ, i.e., who are required to get their accounts audited by or under any other law, the form prescribed for audit report is Form No. 3CA and the prescribed particulars are to be reported in Form No. 3CD.
Source: Income Tax India’s Official Website