Inventory cost adjustment

Hi Expert,

We maintained the Inventory Cost wrongly and would similar to update the Cost arsenic zero yen. However, the Inventory Valuation volition beryllium posted to P&L if we alteration the Inventory Cost directly.
Is determination immoderate mode to hole the Inventory Cost without affecting P&L?

Or should we cancel each the related transactions, set the Inventory Cost arsenic zero and past repost those transactions?

Thank you and admit for your help.

Best Regards,

Michelle