Unlike the modern "Classic" or "Subscription" plans that rely primarily on an email login (Trimble ID), SketchUp Pro 2019 was one of the last versions to heavily utilize the traditional and Authorization Code pairing.
: Paste your unique Serial Number and Authorization Code exactly as they appear in your confirmation. Sketchup Pro 2019 Serial Number And Authorization Code List
There are several ways to obtain a SketchUp Pro 2019 serial number and authorization code: Unlike the modern "Classic" or "Subscription" plans that
: You can assign specific dash patterns (dots, dashes, etc.) directly to layers in the Layer Tray. Improved Communication Sketchup Pro 2019 Serial Number And Authorization Code List