Information return obligation requires specified persons to furnish prescribed transactional records and allows rectification, with notices for non-compliance. Specified entities including taxable persons, public bodies, tax authorities, banks, electricity suppliers, registration authorities, stock exchanges, depositories, the GST Network and persons with Unique Identity Numbers must furnish information returns of registration records, account statements, periodic returns, tax payments and transactional details in the prescribed form, manner, time and to the prescribed authority. Defective returns may be intimated for rectification within thirty days or an allowed extension; unrectified returns are treated as not furnished. Authorities may issue notices requiring submission where returns were not furnished within the specified time.