Do we need ot add Items in Item Master context DFF for India Localization

Hi Team,

We are selling Raw Materials to third party and getting Finished Products from them. Then these are sold to the customers / distributors.

Now my question is do we need to add all the RM , FG and some RGF items also in the context of Item Master as exicse flag - No/ Yes , Modvat Flag - No / Yes  etc , Item class - Based on actual class of the item etc...

As we don't manufacture these items in our organization do we need to add them in the context above for each item.

Your thoughts are highly appreciable

Regards