Nested for each in data mapping duplicate information

I try to use nested for each in data mapping to iterate complex nodes, complex nodes look like this:

In the data mapping I have created something like this:

<ns21:a>

  <xsl:for-each select="/nssrcmpr:execute/nssrcdfl:request-wrapper/nssrcdfl:locations">

    <xsl:variable name='currLocation' select='.'/>

    <xsl:for-each select="/nssrcmpr:execute/nssrcdfl:request-wrapper/nssrcdfl:locations/nssrcdfl:Addresses">

      <xsl:variable name="currAddress" select="."/>

    <ns21:b>

      <ns21:location_name>

        <xsl:value-of select="$currLocation/nssrcdfl:location_name"/>

      </ns21:location_name>

      <ns21:location_refnum>

        <xsl:value-of select="$currLocation/nssrcdfl:location_refnum"/>

      </ns21:location_refnum>

      <ns21:Address_line>

        <xsl:value-of select="$currAddress/nssrcdfl:Address_line"/>