S. 201 : Deduction at source-Failure to deduct or pay-Non-resident-Fees for technical services-If the amount is not chargeable to tax in the assessment of recipient the assesseee cannot be held to be assessee is default-Not liable to pay tax and interest-DTAA-India-Singapore.[S. 9(1)(vi), 191, 195, 201(1), 201(IA), Art. 5, 7, 12(4)(b)]