Error outputting row # <row number> for output file <flat file target>. The row was rejected.
The Integration Service encountered an error outputting the row to the flat file target, and wrote the row in the reject file. The Integration Service may have rejected the row for one of the following reasons:
The target is a fixed-width file, and the field width for a datetime column is not large enough to accommodate the datetime value, including the datetime format.
The target is a fixed-width file, and the field width for a numeric column is not large enough for the numeric value, including the decimal and thousand separator.
Edit the target definition in the Designer, and verify you configure the precision and field width to accommodate the total length of the target column.