In the payload, either stock item or recipe must be given, but not both. Wasted quantities are only committed to inventory after the waste event is saved.

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Wasting a recipe

When wasting a recipe, quantity is interpreted as the number of wasted portions (servings). If the recipe is a stockable recipe, its own stock items will be taken from inventory.

If the recipe is not stockable, wasting it will waste the equivalent amount of ingredients required to produce the indicated amount of servings.