<data>
{
for $Record in /ead

where $Record//dsc//did[(not(unittitle) and not(unitdate))]

let $id := $Record/archdesc/did/unitid[@type='clio']/text()
let $repo := $Record/archdesc/did/unitid[1]/@repositorycode
let $didNoTitleDate := $Record/archdesc/dsc//did[(not(unittitle) and not(unitdate))]
return

<record>
 <id>{$id}</id>
 <repo>{data($repo)}</repo>
 <u>{$didNoTitleDate}</u>
</record>

}
</data>