Investments made after March 31st cannot be used to reduce your income tax liability for the financial year 2022-23. To claim deductions, payments for investments must be made within the financial year, meaning before the 31st of March. No extensions were granted for this period.
30 March 2023
To avail the deduction from gross total income, one have to make a payment for the investment within the financial year. i.e. before 31st March.
So to answer your question, Investment can be made but tax liability can not be reduced for the F.Y. 2022-23.