To prevent the traffic loss.
When the traffic comes to FuseClick,it can’t execute the offer under following 3 circumstances:
(1)   The offer is in Invalid status (Paused, Archived or Expired).
(2)   The offer has reached the caps limit.
(3)   The enforce GEO targeting option is ON and set the GEO countries or device is ON, but doesn’t set any redirect offer.
Secondary offer is similar to backup offer. The difference is – It is set by Fuseclick Admin.Secondary Offer has less priority than Backup offer