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3270 Data stream error

 
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Benchwarmer

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Joined: 16 Jul 2016
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PostPosted: Tue Apr 17, 2018 12:06 am    Post subject: 3270 Data stream error
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Receiving following error in a existing CICS transaction

Quote:
An SFE, SA or MF order was received with an unrecognized attribute type. The error occurred at location 0x424 in the write.


Once the user received error on different location

Quote:
An SFE, SA or MF order was received with an unrecognized attribute type. The error occurred at location 0x41e in the write.


Sending the map via below command

Code:

EXEC CICS                           
  SEND MAP('MAPNAME')               
       MAPSET('MAPSET')           
       FROM(COPYOUT) ERASE         
       CURSOR                       
END-EXEC. 


I would like to know how to map this location in physical or symbolic map to determine the field causing the issue.

Did not find anything that talks about what am looking for. Any pointers will be helpful.
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Robert Sample

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PostPosted: Tue Apr 17, 2018 3:23 am    Post subject:
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Are you sure the map storage is initialized to nulls before sending the map? There should be a MOVE LOW-VALUES TO MAPNAMEO somewhere before the SEND MAP.
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Benchwarmer

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PostPosted: Tue Apr 17, 2018 9:29 am    Post subject: Reply to: 3270 Data stream error
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Yes, the map storage is initialized. I don't see an issue with that. This issue does not happen often. There is no distinguishable scenario causing the issue. It happens randomly.
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Robert Sample

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PostPosted: Tue Apr 17, 2018 5:10 pm    Post subject:
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Quote:
There is no distinguishable scenario causing the issue. It happens randomly.
Which is a strong indication that the issue is caused by a storage overlay in the program.
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Rohit Umarjikar

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Joined: 21 Sep 2010
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PostPosted: Tue Apr 17, 2018 9:10 pm    Post subject:
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Check if this resolution works which similar to what you got.
http://ibmmainframes.com/about64180.html
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Benchwarmer

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PostPosted: Tue Apr 24, 2018 1:05 am    Post subject:
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In the program, a working storage variable is initialized with values from DB2 table for first time the transaction is initiated. In the consecutive interactions of the transaction, the same working storage variable is moved into the map.

This is a protected field in MAP.

I suspect this could be the cause for data stream error. Any pointers?
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Benchwarmer

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PostPosted: Tue Apr 24, 2018 1:59 am    Post subject:
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NOTE: The transaction is re-entrant and value of the working storage variable in question is not stored in communication area.
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