Not all Talent Scouts are eligible for rewards. This is set in your Reward Policy (see here for more information).
In the event that somebody has redeemed a reward Item incorrectly, an Admin/Recruiter may revoke it. The person redeeming the reward will be notified of the revocation via email. You also have the option to add a personal message here.
Furthermore, this reward is visible in the Talent Scout's account as "revoked".
The coins the Talent Scout used to redeem this reward will be refunded.