Central excise

@ Babu, if you are in the process of closure of your mfg activity, then you can surrender your excise registration. Else till the date of surrender, you will have to file Nil return. 

Regards

Anandan.s

once registered, you have to continue, unless your manufacturing activity goes zero.

again under transitional provisions, when Excise would get converted to GST, you can cancell your regn, provided any input credit would get lapsed.