Tag appears more than once

The following exception is created when parsing the message: quickfix.FieldException: Tag appears more than once, field=279

The code:
String strMessage =
"8=FIX.4.2|9=196|35=X|49=A|56=B|34=12|52=20100318-03:21:11.364|262=A|268=2|279=0|269=0|278=BID|55=EUR/USD|270=1.37215|15=EUR|271=2500000|346=1|279=0|269=1|278=OFFER|55=EUR/USD|270=1.37224|15=EUR|271=2503200|346=1|10=171|"
.replace('|', (char)1);

Message message = MessageUtils.parse(new DefaultMessageFactory(), null, strMessage);

Also see http://stackoverflow.com/questions/24573883/quickfixj-rejecting-incoming-message-with-tag-appears-more-than-once-where-the