Safe harbour eligibility for specified domestic transactions depends on timely Form No. 49 filing, verification, and hearing before invalidation. Safe harbour for specified domestic transactions is exercised by furnishing Form No. 49 to the Assessing Officer in complete form on or before the due date for filing the return of income, and the return must be filed on or before the date of furnishing Form No. 49. The Assessing Officer must verify eligibility of the assessee and the specified domestic transaction, may call for further information, and may declare the option invalid by written order after hearing the assessee if the conditions are not met. Objections may be filed before the Principal Commissioner or Commissioner within fifteen days, and prescribed time limits apply; if no order is passed within time, the option is treated as valid.