This Assembler cannot retrieve a document specification using this type with a Custom SND_Pipeline
<p>My send-port throws an error and refuses to create an xml because of the following error:</p>

<blockquote>
  <p>Error details: There was a failure executing the send pipeline "SND_WMS_301" 
      Reason: This Assembler cannot retrieve a document specification using this type: "dcsmergedata".</p>
</blockquote>

<p>The send-pipeline is a simple one that has an XML assembler with the added schema "Schema_XML_WMS_301" (I added a Screenshot of the Pipeline)</p>

<p>When I change the pipeline to pass through, I create an xml document with the following root</p>

<pre><code>&lt;dcsmergedata xsi:noNamespaceSchemaLocation="../lib/interface_order_header.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"&gt;
    &lt;dataheaders&gt;
</code></pre>

<p>The schema seems to have been deployed and is avaible in the Schema's tab in BizTalk. (second screenshot)</p>

<p>I am now out of idea's as to why this could be. This isue also seems very similar but opposite from my other question (<a href="https://stackoverflow.com/questions/39658079/cannot-locate-document-specification-because-multiple-schemas-matched-the-messag" title="Linkquot;">Link</a>) so I feel like I am doing something wrong with my pipelines.</p>

<p><a href="https://i.stack.imgur.com/TMwtn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TMwtn.png" alt="send pipeline"></a></p>

<p><a href="https://i.stack.imgur.com/YTICW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YTICW.png" alt="Schema&#39;s deployed"></a></p>