I try to send Market Data Request and the log file gave me this..
20151027-03:08:46.038 : 8=FIX.4.2 | 9=122 | 35=V | 34=2 | 49=CLTEST | 52=20151027-03:08:45.991 | 56=SERVTEST | 55=CPOTR DEC15 | 146=1 | 207=EXCH | 262=MDRID | 263=1 | 264=1 | 265=0 | 267=9 | 269=C | 10=250
20151027-03:08:46.116 : 8=FIX.4.2 | 9=100 | 35=3 | 34=2 | 49=SERVTEST | 52=20151027-03:08:39.456 | 56=CLTEST | 45=2 | 58=Required tag missing | 371=55 | 372=V | 373=1 | 10=097
The reject message said there are required tag missing, and it says the tag "55" that missing. Even though I've included the tag in my MDR message. Any idea?