ECS not Getting Zero in Excise Invoice -->while Calulating Tax

Hello Experts

User Creating Excise Incoice form T -code J1IIN On basis of Billing Doccument. as per process he is calculating Tax after Clicking on "Calculate Tax" Tab ,system is calulating TAX as it showing Value in CESS & SECess but valuse for ECS is not getting Zero.

His requiremnt is after Tax calculation ECS should get Zero.

Please reply As early as possible

Thanks & regards

Pash@SD