<field>
<name>id</name>
<uniqueName>participant_id</uniqueName>
<title>Participant ID</title>
<type>int unsigned</type>
<required>true</required>
<field>
<name>id</name>
<uniqueName>participant_id</uniqueName>
<title>Participant ID</title>
<type>int unsigned</type>
<required>true</required>