Stock Adjustments enable you to increase or decrease the quantity of items you have "In Stock" (read more about the Inventory list). Typical situations where you could create a Stock Adjustment include:
Inserting initial stock - if you are just starting with Katana, and your business is already operating with some existing stock, you need to enter your current stock levels into Katana. Creating a Stock Adjustment with relevant items, quantities, and values is one of the options. You can also import your initial stock levels using the import template for stock. Read more.
Corrections to stock levels based on stock takings - if the amount of items actually in stock doesn't match what Katana indicates, you can increase or decrease the quantities with a Stock Adjustment.
Changing the stock level for consumable materials not included in Product Recipes - there may be low-value materials that you have in stock and use for manufacturing products, but aren't included in Product Recipes (e.g. thread, nails). In this case, Manufacturing Orders do not trigger inventory movements for these materials. If you wish to track their stock level, you can periodically update the stock level with Stock Adjustments.
Any other positive or negative event, which affects the Stock level - theft, fire, lost items, gifts, etc.
Read more about creating a Stock Adjustment.