Go to Notepad and check what are all the possible records having defects of data then again execute a program with the new text file (containing missing data).
While executing the program we have mode settings like (back ground(A),no background(N),errors(E)) so we have to select the background mode then we will find out where the error has been occured after then we can change our flat file.
To handle fields which have not entered into database in BDC should be stored into an internal table. for which you have to call a function module 'error_log'.
