A SKU (stock keeping unit) is an identifier defined by a seller.
Some sellers use SKUs to track complex flows of products
and information on the client side.
A seller can specify a SKU when listing an item with AddItem
and related calls. eBay preserves the SKU on the item, enabling you
to obtain it before and after an order line item is created.
(SKU is recommended as an alternative to ApplicationData.)
A SKU is not required to be unique. A seller can specify a
particular SKU value on one item or on multiple items.
Different sellers can use the same SKUs.
If the SKU is unique across a seller's active listings, and if
the seller listed the item by using AddFixedPriceItem
or RelistFixedPriceItem, the seller can also set
Item.InventoryTrackingMethod to SKU. This allows the seller to use
SKU instead of ItemID as a unique identifier in subsequent calls,
such as GetItem and ReviseInventoryStatus.
Note:
AddFixedPriceItem and RelistFixedPriceItem are defined in
the Merchant Data API (part of Large Merchant Services).
XML Representation Summary
XML Source (w/o annotations (1); see within schema source)
<xs:element maxOccurs="unbounded" minOccurs="0" name="SKU" type="ns:SKUType"/>
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