Tax collection return process: provisional receipt deemed acknowledgement unless deficiencies are raised and rectified within prescribed timelines. Procedure requires the e-TCS Intermediary to validate and upload e-TCS Returns with Form 27B, verify bank deposit particulars and Permanent Account Number, obtain a provisional receipt from the e-filing Administrator which is deemed the acknowledgement on transmission, and follow deficiency memo processes allowing short-period rectification or referral to the Assessing Officer for possible invalidation if deficiencies remain unremedied.