TDS should be credited in which year it is deducted. TDS should not be carried forward. This return for claiming the refund of excess taxes paid can be filed within a period of one years from the end of the financial year for which claim the refund relates.
TDS is deducted in respect of income. You have to show income mandatorily and hence TDS too. If you don't want refund it is ok but you can not carry forward as corresponding income is already shown.
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