FIFO is a widely used costing method where the oldest inventory items are sold first. This is a common and straightforward method for valuing inventory.

Automatic cost adjustment is a crucial setting for resolving inventory reconciliation issues. When this is enabled, Business Central automatically adjusts the cost of goods sold (COGS) to match the actual cost of the inventory. This helps prevent discrepancies between the inventory sub-ledger and the general ledger, ensuring that the financial data is accurate.