processDataPayload renamed to processPayload
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diff --git a/specification/index.html b/specification/index.html
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@@ -242,7 +242,7 @@
 	Process Payload
 </h1>
 <p>The process message is the format to exchange data out of discrete processes. It also allows to transport process information, part information and measurement data for each phase of the process.</p>
-<img src="images/processDataPayload.png" alt="Class diagram of the process data payload" title="Class diagram of the process data payload" class="center-block img-responsive">
+<img src="images/processPayload.png" alt="Class diagram of the process data payload" title="Class diagram of the process data payload" class="center-block img-responsive">
 
 <div class="panel panel-default">
 	<div class="panel-heading">