Click Revoke in smart card properties and enable the Clean card on agent option.

• Clean card removes all certificates written to the smart card with Indeed Certificate Manager. Certificates and keys written before the smart card is deployed to Indeed CM remain intact.
• Initialize card removes all contents of the smart card, password policy (if any) and changes the smart card name. 

If the smart card is to be unassigned from the user, then click Advanced and enable the Unassign card from user option. If the option is disabled, then the smart card remains assigned to the user after clearance or initialization. Therefore, it can be issued by the user again.

To create the task, click Revoke.

If the Initialize card option was selected and the message text is specified in the User messages of the smart card usage policy for this operation, the user will be notified of the task.