initiating at the rewards server a system game history ID reflective of {HEAD ~ transactions} of {TAIL ~ the system game} 
initiating at the rewards server a system game history ID reflective of { HEAD ~ transactions } of { TAIL ~ the system game }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL