Which retail inventory management system holds the Guinness World Record for the largest synchronized inventory count, completed in 2019?

The retail landscape has seen some incredible achievements that have made it into the Guinness World Records. From massive stores to groundbreaking inventory systems, retail giants have pushed boundaries to earn their place in history. Test your knowledge about these remarkable retail world records and see if you can identify which innovative milestone actually happened.

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Amazon's 'Galaxy' system, which counted 14.2 million unique items across 175 warehouses simultaneously
Walmart's 'Inventory 360', which tracked 7.8 million products in 24 hours using RFID technology
Alibaba's 'GoldenScan', which processed 22 million SKUs during Singles Day preparation
Target's 'RedCount' system, which utilized 12,000 employees to count inventory across all US stores in one day