Deduction under commission income

1. Any expenditure incurred to earn the commission.

2. Deduction available as per Chapter VIA of the act.

For the payments made and investments as specified under the act.

How much you have expended for earning the commission income?

Have you maintained its proper  record? If yes, that is deductible.

For any deduction u/s. 80C, 80D etc... refer.... guide/deductions

1. Commission income if of two types, It can be taxed under the head PGBP or under IOS. If commission income is in the nature of regular and professional income it will be charged to tax under the head PGBP. If it is based on some activity which is not regular then it will be taxed under the head IOS. 
2. For both the above incomes deductions are available. Expenses incurred directly in relation to earning the commission will be allowed as deductions under the head PGBP. 
3. If it is taxed under the head IOS, then expenses will be allowed as per sec 57(iii) specifies that any expenses incurred wholly and exclusively for the purpose of earning the commission will be subject to tax. 
4. With respect to deductions under Chapter VI-A. Investments, contributions that are allowed to be claimed for the above commission income. These investments are allowed as deductions from Gross Total Income and balance amount is taxed. Some deductions under VI-A's are sec 80C, 80CCD, 80D, 80TTA, etc are available. Please refer to the relevant section for further clarification. 
Please correct me if the above solution has an alternative view. 

If commission income is below Rs. 60000/- you may declare it under no account case, otherwise you have to prepare P&L account & BS.

What is he code you specified? or did you offer the income u/h. IFOS??

'IFOS' is short form of Income From Other Sources'

Well, you have declared the commission income under business income (PGBP head), but with no account case...

So, at present you wait for any communication from CPC.....

If any defective notice received in future, you can rectify it at that time.

As per act, you are not allowed for 'no account case'; but sometimes it misses to get detected; so you may wait for it.

Time period for getting processed is not fixed; fluctuates very much these days.

In case of defect found, you will be informed.