- When you sell or exchange Referrals, you do not retain a copy;
- Referrals disappear after you discover the Contract they were required for;
- If you use the "Sell All Referrals" option at the Contracting Office, you irreversibly sell all your available Referrals;
- If you make an offer to exchange a Referral, it becomes unavailable for 3 days. In order to cancel the offer, go to the Logistics Exchange - "Convoys" tab, and select the "Delete" option in the "Loaded Convoys" section.
To unlock special Syndicate Tactical Assault Group Units, you need to discover the Contracts that require unique Referrals that can be purchased only with IPs. These Referrals can be purchased at the Black Market, "IPs" section.