Whether an assesse under composition scheme is required to furnish details of inward supply and outward supply?

No. An assesse under the composition scheme is not required to furnish details of inward and outward supplies. Such assesses are required to file quarterly returns in FORM GSTR-4 within 18 days from the end of quarter.

(ICAI FAQ PUBLICATION 06-09-2017 -: Returns : FAQ NO. 16)