Thanks for your kind reply..
I got the problem & solution too.
Actually during operation cancellation (CO13) the confirmation cancelled but the automatic goods movement has not been done. So the goods reversed from T-code - MB31, 102 Mvt.
& later on it was checked that in COGI the error is pending
As the goods already reversed so i was trying to delete the entries from COGI. but it has been neither delete nor clear due to deficit in stock
Now i cleared the error-
Issued goods from MB31, 101 mvt & cleared the error from COGI as stock is avail.
Regards,
Sunil Pujari