Hi Mani,
After corrections as suggested by the experts above, if still it doesn't solve, please check the target locations (it_bsak/it_bkpf). I recently faced this error. If the dump is coming in the first query then check the structure of it_bsak and it the dump is coming in the second query then check structure of it_bkpf.
Please check the order of the fields in the structure with the select query and the data types of fields with the fields in the select query. Can you show us the structures and and the error analysis in the dump?
Regards
Purnand