Error Details:
“There was a failure executing the receive pipeline: Microsoft.BizTalk.DefaultPipelines, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35″ Source: “XML disassembler” Receive Port: “ReceivePortName” URI: Reason: Finding the document specification <Schema_Name> by message type <MessageType> failed. Verify the schema deployed properly .”
Solution: This error normally occur when BizTalk received wrong XML file on receive port. To validate the xml file. you can open BizTalk solution in visual studio and open the corresponging Schema. And in the property section set the location of the file in Input Instance Filename which was failed and then right click in the schema and validate instance. It will provide the details where the file has wrong information which is not matching with schema. and correct the file or schema as per the requirement.
And Then Validate Instance
BizTalk World 
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