Applications authorized using the OAuth 2.0 feature in your NetSuite production account are not copied to your Release Preview or to your sandbox accounts. Users must authorize applications explicitly in Release Preview or in a sandbox to test OAuth 2.0 feature in these accounts. Each time the sandbox is refreshed, users must authorize applications explicitly in the sandbox.
Management of authorized applications includes the following tasks:
Unlike the TBA tokens, you cannot create OAuth 2.0 authorized applications directly in the UI. For more information, see OAuth 2.0 for Integration Application Developers.