“3.The short ground on which the writ petition was filed challenging the order passed by the First Appellate Authority is by contending that the First Appellate Authority, though accepted the stand of the appellant that freight charges cannot be added to the value of the sale, came to the conclusion that the transaction, which according to the appellant, was an interstate sale should be treated as a local sale. The appellant contended that this finding of the First Appellate Authority is wholly without jurisdiction as he has no power to change the character of the transaction and while deciding the appeal in terms of Section 52 of the TNVAT Act, the First Appellate Authority can either confirm, reduce, enhance or annul the assessment or the penalty or both; set aside the assessment and direct the Assessing Officer to make a fresh assessment after such further inquiry as may be directed; or pass such other orders as he may think fit; or in the case of any other order, confirm, cancel or vary such order. The appellant contended that in terms of Section 52(3) of the TNVAT Act, the powers exercisable by the Appellate Authority qua the Assessment Order cannot travel beyond the same. The learned Single Bench did not agree with the appellant by pointing out that in terms of Clause (b) of Section 52(3), the Appellate Authority in case of any other order, confirm, cancel or vary such order. In our considered view, Clause (b) cannot read in isolation, but it is relatable to Clause (a) in Section 52(3). The Appellate Authority, while considering an appeal filed by Assessee/Dealer does not exercise his suo motu power, which is exercisable in terms of the provisions, by an Officer of the Joint Commissioner. The procedure for such suo motu revision are entirely different and distinct for normal appellate powers conferred on the Appellate Joint Commissioner. Therefore, while reading Clause (a) and (b) of Section 52(3), a harmonious construction has to be given, bearing in mind the legal principle that the Appellate Authority cannot travel beyond the subject matter of the assessment. The Appellate Authority, in the case on hand has precisely done so and while accepting the case of the appellant that the freight charges cannot