MigrationWTF: Specified key was too long; max key length is 3072 bytes
I recently hit a curveball with a custom migration to import location data into Drupal. I am helping a family friend merge their bespoke application into Drupal. Part of the application involves managing Locations. Locations have a parent location, so I used taxonomy terms to harness the relationship capabilities. Importing levels one, two, three, and four worked great!