Earlier year income tax return not filled and tds not claimed

No, You can not claim that in current Year Income tax return... (in current year, you can claim only current year TDS)
You can claim that TDS in income tax returns of respective years only..

There is an option to claim refund of earlier year . for this u have to file condonation application. if CIT Approval got then refund can be claimed by filing return.

if need more help DM

Yes you can claim refund of earlier year in current year after fullfilling certain criteria as per income tax return
n most importantly your previous year income should not exceed the income tax return income as per the rule

Thank you so much all the respected members for your precious time and comments.
sir/mam,
I have another doubt on this bcz There is an option in itr4 return form in taxes page 'Unclaimed tds brought forward' what it means...?
And plz suggest how to process condonation application...?can i files the same online if yes than how can i do the same..
Request your help.

1.you can give an application to the income tax commissioner and after receiving the approval, you can claim a refund for previous years subject to some terms and conditions or
2.login to your account
then my account and then service request
request type mein write new request
n category choose condonation request
they choose other if you not find your request then give reason n summit
I have no idea of online as I go the above
one n claim refund for my clients
before doing this first check out your compliance sheet on online....
If assessee receives advance against some payment in current financial year and TDS has been deducted on that payment, there will be a situation according to which refund will be due to assessee in current financial year and he has to pay tax in next financial year on same payment.
To avoid such a situation, department has provided a column for "unclaimed TDS brought forward(b/f)" in ITR form where TDS and income can be shown in the same year as per matching concept, even though it is deducted in some previous year.

now it is better to prepare XML format for claiming previous year TDS
online is not good for it personal experience
and the financial year which tds is cut out is mandatory to mention here

Amazing detailed clear explanation...my doubt got resolved properly..Thank you so much.
Also thank you to all the respected members.🙏