What is clause H in the section 43B of the Finance Act 2023?

The clause (H) in section 43B of the Income Tax Act states that, if you make a purchase from an MSME-registered business and make a payment for it within 45 days of the purchase date, the amount will be considered as a deduction on accrual basis (as of the bill date). However, if you make the payment after 45 days of the purchase, the purchase amount will be considered as a deduction only on a cash basis (as of the payment date). If the payment date falls in the next financial year while the bill is in the current financial year, this will increase your tax liability for the current financial year.