Re: [Quickfix-developers] bad checksum on repeating groups

[Rich H. <rh...@ql...>]

I had this problem... the cause was not having a correct specification 
in my data dictionary.
Are you using a data dictionary?

Cheers,
Rich


Brian McAndrews wrote:

> We are get a quote acknowledgement (35=b) message and quickfix appears 
> to be calculating the checksum incorrectly. It appears that the 
> checksum is always the number of quote entries – 1 off from what the 
> checksum should be. Here’s an example message:
>
> 8=FIX.4.29=044935=b34=54349=AFIX20256=RNS52=20050908-16:44:37117=QU_VLO297=0300=0336=W_MAIN296=1302=1311=VLO304=4295=4299=QU_1625819#VLO#2005#9#80#155=VLO167=OPT200=200509201=1202=80368=09006=0299=QU_1625832#VLO#2005#9#85#155=VLO167=OPT200=200509201=1202=85368=09006=0299=QU_1674687#VLO#2005#9#90#155=VLO167=OPT200=200509201=1202=90368=09006=0299=QU_1838502#VLO#2005#9#95#155=VLO167=OPT200=200509201=1202=95368=09006=010=101
>
> Here, 4 quote entries are being acked however the quickfix event log 
> shows the computed check sum to be 98 instead of 101. One thing 
> unusual here is the user defined 9006 tag in each of the quote 
> entries. In stepping through the debugger, I noticed those tags 
> checksums being computed outside of the field group.
>
> Any help would be appreciated.
>
> Thanks,
>
> Brian McAndrews
>