Excise Tax - Claim CENVAT on Receipt & Settlement / Reconciliation

Hi Team,

The query is with reference to Excise Tax - Claim CENVAT on Receipt

1) - Is it good practice to defined Excise tax as adhoc, as tax amount keeps on getting changed.

2) - How to do settlement of Excise using Oracle India Localization and is the netting with Service Tax can also be used.

3) - Suppose, we define all Excise related accounts as 100% recoverable and then do not tick Claim CENVAT on Receipt and save the GRN (Receipt Localized) and let accounting happen. Then, will the excise duty gets loaded onto the item cost.

4) How does the reconciliation process happens for Excise.