The dispute arose after SPNI, dissatisfied with an earlier audit, invoked Telecom Regulatory Authority of India (Trai) rules that permitted a second audit. It appointed MGB & Co after Tata Play objected to its first choice, KPMG Assurance and Consulting Services. Under The case was heard by TDSAT chairperson TDSAT ruled data must be preserved until 7 days after audit is done or final report is prepared, whichever is later. Auditor's copies will be destroyed, while Tata Play must retain original data until ...