Yes, you can choose offline inventory mode to update your inventory. In this case your accounts will not be affected according to inventory. The accounting effect can be given later as per your requirement. To set offline Inventory mode deselect the option Give effects to Account after making Inventory voucher from the Inventory Setup. Yes, ArthaLekha provides Bill of Material option in Utilities menu where user can get material details such as quantity necessary and available to manufacture an item.
Inventory also provides goods convert facility.
In First Out basis while in case of Lotwise conversion mode you are given the list of the transaction for selection against which you can do the issue of item. ArthaLekha Inventory provides different types of voucher viz. In ArthaLekha you can create various tax groups and define taxes under them as per your requirement. ArthaLekha provides Average Cost, Weighted Average Cost, Standard Cost and last purchase Cost methods for stock valuation. Market valuation is possible through Last Sale Price and Standard price methods.