We are developing an utility which will take fix message string as input to the MessageUtils.parse method to create a TradeCaptureReport Object. This object intern pass it to the downstream to process further to create a Deal in our system.
Using below code, we are now able to process the fix messages for Normal Deals but the same is failing to process spread deals with the following error. while executing the
message.getGroup(i, nolegs) on TradeCaptureReport Object

quickfix.FieldNotFound: 555, index=1
but the 555 has two legs in the fix message below.

Java Code: We tried with the 2 methods the results into the same error.
1)message = (TradeCaptureReport)MessageUtils.parse(new quickfix.fix44.MessageFactory(), dd, fixMsg);
2) fixMsg is my String contains the below fix message.
TradeCaptureReport message = new TradeCaptureReport();
message.fromString(fixMsg, dd, true);

Error is coming because message.frromString()// method is not populating the group by filed map for 555 though it present in the

Fix messages:
8=FIX.4.4
9=946
35=AE
49=ICE
34=3
52=20150804-07:38:17.861
56=15746
57=26
571=180
487=0
856=0
568=474be469-5eab-4207-845a-9cfa4f88f6e9
828=0
17=5000131
39=2
570=N
55=142090
48=GWM FMX0015-GWM FMZ0015
22=8
461=FXXXXX
207=IFEU
9064=0
916=20151101
917=20151231
32=5
31=-1.330
9018=5
9022=30
75=20150804
60=20150804-07:37:10.143
9413=0
762=99
9028=666003
552=1
54=2
37=5000127
11=707335134
453=6
448=tpoint_gui1
447=D
452=11
448=Triple Point Technology, Inc.
447=D
452=13
448=15577
447=D
452=56
448=15577
447=D
452=35
448=U
447=D
452=54
448=144
447=D
452=55
*555=2
600=141989
602=GWM FMX0015!
603=8
608=FXXXXX
616=IFEU
624=2
637=46.570
687=5
654=5000132
9019=5
9023=30
9020=20151101
9021=20151130
539=3
524=U
525=D
538=54
524=144
525=D
538=55
524=15577
525=D
538=35
600=141975
602=GWM FMZ0015!
603=8
608=FXXXXX
616=IFEU
624=1
637=47.900
687=5
654=5000133
9019=5
9023=31
9020=20151201
9021=20151231
539=3
524=U
525=D
538=54
524=144
525=D
538=55
524=15577
525=D
538=35
*10=250