If the ticket is a duplicate, a duplicate ticket error is displayed at {HEAD ~ block} 224 and the program returns to {TAIL ~ block} 214 
If the ticket is a duplicate , a duplicate ticket error is displayed at { HEAD ~ block } 224 and the program returns to { TAIL ~ block } 214
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH