Improved - in a return transaction, if it is not possible to match a returned item to an original purchase item, the item will be treated as a negatively-priced purchase item in the returning basket and the excluded_from_spaaza parameter will be set to true to avoid applying any Spaaza campaign logic to the item. See returns documentation for more information.
Improved - return a parameter_mismatch warning in basket endpoints when sum of item_price amounts for items does not match basket_total_price value
Improved - return a warning in basket endpoints when a returned item cannot be matched to an original purchase transaction
