Hi
As per the filing instructions for ITR 1, for salary purposes, fill the details of:
1. Salary/ pension
2. Allowances not exempt
3. Perquisites
4. Profit in lieu of salary
5. Deductions under section 16 etc. as given in TDS certificate (Form 16) issued by the employer.
If the elements of tthe salary fall in the above mentioned heads, then mention them under the respective heads, otherwise the summation of the elements of salary are to be reported in the first row, "Salary/Pension".
However, if the income has not been computed correctly in Form No.16, please make the correct computation and fill the same in this item.
Further, only these heads are to be filled. It is your right to obtain Form 16 with the employer and ask for proper calculations of salary and tax payable thereof as per the latest ITR form format.