UNA:+.? '
UNB+UNOA:1+SENDERID+RECEIVERID+240218:1200+654321'
UNH+1+ORDCHG:D:97A:UN'
BGM+230+ORDER12345+9'
DTM+137:20250218:102'
DTM+2:20250228:102'
RFF+ON:ORDER12345'
NAD+BY+BUYER123::91'
NAD+SU+SUPPLIER789::91'
LIN+1++123456:IN'
IMD+F++:::Product Description'
QTY+21:15:EA'
       /* Changed quantity from 10 to 15 */PRI+AAA:19.00'
      /* Changed price from 20.00 to 19.00 */LIN+2++789012:IN'
IMD+F++:::Another Product'
QTY+21:0:EA'
        /* Cancelling this line item */UNS+S'
CNT+2:1'
UNT+12+1'
UNZ+1+654321'