<div id="adobe-dc-view" style="height: 800px; width: 800px;"></div>
<script src="https://documentcloud.adobe.com/view-sdk/main.js"></script>
<script type="text/javascript">
document.addEventListener("adobe_dc_view_sdk.ready", function(){
var adobeDCView = new AdobeDC.View({clientId: "<CLIENT ID>", divId: "adobe-dc-view"});
adobeDCView.previewFile({
content:{location: {url: "<?php the_field('dokumente_datei'); ?>"}},
metaData:{fileName: "<?php the_title(); ?>"}
}, {embedMode: "SIZED_CONTAINER"});
});
</script>