S. 260A : Appeal – High Court – High court refusing to frame question as substantial question of law — High Court cannot review its decision — Even if the principle of res judicata does not apply to tax matters, consistency and certainty of law would require the State to take a uniform position and not change its stand in the absence of change in facts or the law [-. Revenue’s appeal before High Court would not lie if tax appeal fall short of monetary limit of Rs. 1 crore S.260A(4) , 268A]