Codes are kept in a coupon pool. Each recipient receives one available code from that pool.
The value, expiry date and redemption rules belong to the system where the codes were created.
Referral Factory records the recipient, email address, code, status, issued date and redemption date.
The batch page shows Issued, Used, Remaining and Total. Issued shows how many codes have been assigned from the pool. It may include rewards that are still Due, so it will not always match the number of rows marked Issued.
Referral Factory does not create the underlying discount or voucher value. It assigns and tracks the codes you provide.