Why am I getting a warning message about differing alignments?

[Costello, Roger L.]

Hello DFDL community,

I am getting this weird warning message:

[warning] Schema Definition Warning: Continuation_Word_2 is an optional element 
or a variable-occurrence array and its alignment (1) is not the same as 
group[5]'s alignment (8).

The input seems to be getting parsed properly, and yet I get that warning 
message. Why am I getting that warning message? What can I do to get rid of it?

Also, the warning message refers to group[5]. Here is group[5]:

<xs:group name="hiddenParityGroup">
    <xs:sequence>
        <xs:element name="HiddenParity"
                        type="unsignedint5"
                        dfdl:outputValueCalc="{0}" />
    </xs:sequence>
</xs:group>

How does that group have any relevance?

/Roger