Problem statement
How do I enable or disable the Opaque Access Token and Authorization Code Fixed Length in my tenant?
Solution
Note that this feature is removed after April 12, 2022, for Public Cloud tenants and June 2022 for Private cloud tenants. (reference: Deprecations and Migrations). Any Tenant created after these dates will have varying sized Opaque Access Token and Authorization Codes.
With that, to enable or disable the Opaque Access Token and Authorization Code Fixed Length, please navigate to your Auth0 Dashboard > Settings > Advanced and scroll down to the Migrations section.
There, you will find a switch to toggle on or off for the Opaque Access Token and Authorization Code Fixed Length. See below.