Duplication of messages - FTP to R/3

Hi,
We have an existing FTP to R/3 interface using File Adapter.
Yesterday for a particular period of time same messages has been processed twice from the FTP.
PFB my communication channel processing parameters,
Quality of Service - 'Exactly Once'
Poll Interval - 60 secs
What might be reason for duplication of the message ?
Regards,
Thyagu.

Hi Thyagu,
Check with FTP admin, there might be some problem in FTP, due to some reason it placed the same files multiple times/ write the same data into multiple files on source folder.
Last week I had similar issue where the files were processed by PI and posted Idocs to ECC. Since these were duplicates around 1200 Idocs were failed to post where the documents were already modified by other IDocs.
I checked with FTP admin and given the timestamp details when it was happend. They found some problems on FTP server after checking the logs during given time stamps and found an issue writing of the same data into multiple files. The issues was cleared automatically at FTP end after some duration and it's start writing files normally.
FTP Admin confirmed tha they will make sure that it would not happen again. But not sure what kind of actions/fix they were done.
it's worth to check with FTP end.
Cheers
Veera

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http://www.ipswitchft.com/Products/MOVEitFreely/Evaluation.aspx

Duplication of messages - FTP to R/3

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