getItem()
getItem( $parameter = array())
https://developer.ebay.com/devzone/XML/docs/Reference/eBay/GetItem.html
ItemID - ebay ID
SKU - shop Model (Artikelnummer)
In GetItem, SKU can only be used to retrieve one of your own items, where you listed
the item by using AddFixedPriceItem or RelistFixedPriceItem, and you set Item.InventoryTrackingMethod
to SKU at the time the item was listed. (These criteria are necessary to uniquely identify the listing by a SKU).
Parameters