Recognised stock exchange definition clarified: substitution replaces recognised association and adds prescribed conditions, effective from April 2020. The amendment substitutes the term 'recognised stock exchange' for 'recognised association' in clause (5) of section 43 and replaces Explanation 2 clause (iii) with a definition referencing the Securities Contracts (Regulation) Act and requiring that the recognised stock exchange fulfil conditions prescribed and notified by the Central Government; the amendment takes effect from 1st April, 2020.