Many API calls include application tokens as an added layer of security. You assign tokens to an application that match the tokens in API calls to that application. In rare cases, you may want remove a token from an application.
Note: Be sure you want to remove the application token. When you do so, API calls citing the removed token will fail to work if tokens are required for that application.
To remove an application token:
Open the application.
In the menu bar on any application page, select Customize > Application.
On the left side of the Settings tab, click Advanced Settings.
In the Application Tokens section, click the Manage Application Token link.
The Application Tokens page displays.
Locate the token you want to remove and click its Remove link.
Click Yes to confirm that you want to delete the token.
The token disappears. API calls containing that application token no longer work.