How to set up tokenization in Magento 

1. Log in the Magento back office.
2. From the sidebar, select Stores > Configuration.
3. Scroll down and open the Sales menu and then, open Payment methods.
4. Select the Configure payment methods submenu and select Tokenization.
5. Make sure Enabled is set to Yes, the title shows Adyen Tokenization and the Token type is set to your preferred setting.
6. Once everything is added, click on Save config.
7. If successfully saved, you’ll get a notification to go to Cache Management.
8. Click on this notification and then select on the Flush Magento Cache button.
9. Tokenization is now active for your customers.