Hi abhishek,
There is an option in the channel, archive files with errors-
The logs are maintained in channel monotoring when that situation happens. Specify a different archive directory for error files with above mentioned option. that way u will have all failed file archived in separate folder.
Follow point 6 in processing parameter
https://help.sap.com/saphelp_nw73/helpdata/en/44/682bcd7f2a6d12e10000000a1553f6/frameset.htm
Regards,
Vikas