When a component is a repeating group and the its first element is also a repeating group, the generated code is invalid. This occurred when using a custom FIX50SP2 dictionary derived from FIX 5.0 SP Expansion Pack 196.

An example is the following definition from the dictionary file:

<component name="PhysicalSettlTermGrp">
<group name="NoPhysicalSettlTerms" required="Y">
<component name="PhysicalSettlDeliverableObligationGrp" required="N"/>
<field name="PhysicalSettlCurrency" required="N"/>
<field name="PhysicalSettlBusinessDays" required="N"/>
<field name="PhysicalSettlMaximumBusinessDays" required="N"/>
<field name="PhysicalSettlTermXID" required="N"/>
</group>
</component>

Where the component PhysicalSettlDeliverableObligationGrp is defined as:

<component name="PhysicalSettlDeliverableObligationGrp">
<group name="NoPhysicalSettlDeliverableObligations" required="Y">
<field name="PhysicalSettlDeliverableObligationType" required="N"/>
<field name="PhysicalSettlDeliverableObligationValue" required="N"/>
</group>
</component>

This generates the source file PhysicalSettlTermGrp.java with the following extract:

public static class NoPhysicalSettlTerms extends Group {

static final long serialVersionUID = 20050617;

public NoPhysicalSettlTerms() {
super(40204, ,
new int[]

);
}

Looking through the source code, it appears that there may be an issue in codegenerator/Message.xsl where the group-delimiter is generated.

I can email (or upload if possible) the entire dictionary file I'm using. To recreate, replace FIX50SP2.modified.xml file and build.