BizTalk FF Pipeline: The remaining stream has unrecognizable data.

Hi All,

Hope everyone is enjoying the festive season.

Another small article on the error that I have got when I am handling the Flat file message on the receive side.

Error:-
The remaining stream has unrecognizable data and HRESULT:c0c01464 in BizTalk on the
Log Name:      Application
Source:        BizTalk Server
Date:          2019-12-17 10:34:33 AM
Event ID:      5753
Task Category: BizTalk Server
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      YourBizTalkServerName
Description:
A message received by adapter "BiztalkMessagingEngine" on receive location "YourReceiveLocationName" with URI "YourLocationAddress" is suspended.
 Error details: There was a failure executing the receive pipeline: "YourPipelineFullyQualifiedName, YourProjectName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=27a168965285aebe" Source: "Flat file disassembler" Receive Port: "YourReceivePortName" URI: "YourLocationAddress" Reason: The remaining stream has unrecognizable data. 
 MessageId:  {BC21C975-006C-418F-97A5-EAAE7472C0E8}
 InstanceID: {0DA3DA9D-1234-4D0A-B623-68159BF68DDA}
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="BizTalk Server" />
    <EventID Qualifiers="49344">5753</EventID>
    <Level>2</Level>
    <Task>1</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2019-12-17T08:34:33.000000000Z" />
    <EventRecordID>199652</EventRecordID>
    <Channel>Application</Channel>
    <Computer>YourBizTalkServerName</Computer>
    <Security />
  </System>
  <EventData>
    <Data>{BC21C975-006C-418F-97A5-EAAE7472C0E8}</Data>
    <Data>{0DA3DA9D-1234-4D0A-B623-68159BF68DDA}</Data>
    <Data>BiztalkMessagingEngine</Data>
    <Data>Your location address</Data>
    <Data>YourReceiveLocationName</Data>
    <Data>There was a failure executing the receive pipeline: "YourPipelineFullyQualifiedName, SYourProjectName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=27a168965285aebe" Source: "Flat file disassembler" Receive Port: "YourReceivePortName" URI: "YourLocationAddress" Reason: The remaining stream has unrecognizable data.  </Data>
  </EventData>
</Event>

Cause:- In my case, I have a repeating record which is separated with the LF(Line Feed) character, For some reason, the source system has generated the file with an extra LF character after the first record (first line) which is where the problem is. On the Schema, after first LF, the pipeline is expecting a new record. In my case instead of the new data record, there is another LF which is causing the pipeline to fail with the above-mentioned error.

Solution:- Souce System to correct the behaviour

Execute the FFDASM to create the scenario:- Below is the error when I ran FFDASM.
ffdasm.exe yourTestInputFile.FileExtention -bs yourSchema.xsd

HRESULT:        c0c01464