SketchUp Pro 2019 , serial numbers and authorization codes are unique to each individual "Classic" license purchase and are not provided in a public list. SketchUp transitioned away from these perpetual licenses in late 2020 in favor of subscription-based accounts. MasterSketchUp.com How to Find Your Official 2019 License Details
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Why Do You Need a Serial Number and Authorization Code? SketchUp Pro 2019
Finding a public list of working SketchUp Pro 2019 serial numbers and authorization codes is generally not possible because these "Classic Licenses" are unique to individual purchasers and must be verified by Trimble's servers. SketchUp Pro 2019 , serial numbers and authorization