Assasable value in sales invoice - 2nd stage delear

Dear Friends,

I am working in PVT Ltd company. We are doing Trading Business  of automobile components. Is it mandatory to show the Assessable value in my Excise sales invoice? If yes, could you provide me the rule and reference of Excise.

If it is possible please provide the excise format invoice for 2nd stage dealer.

Is it there is  any possiblity to hide the ASS. Value from Excise invoice? If I hide the details, there is any issue from Excise point of view?

Plesae update..

Thanks

S. Neel