Circular No. 483/49/99-CX I am directed to say that a doubt has arisen in respect of the formula prescribed under Notification No. 11/99-CE (N.T.) to No. 13/99-CE(N.T.) dated 16.2.99 and Notification No. 30/99-CE (N.T.) dated 11.5.99 for calculating rebate of excise duty paid on processed textile fabrics manufactured by independent processors to the extent that the formula in question does not take into consideration the abatement to be allowed