Division 4 BREAKDOWN OF FINANCIAL ASSETS BY INSTRUMENT AND BY COUNTERPARTY SECTOR (4)F1

for debt instruments measured at amortised cost or at a cost-based method, accumulated impairment is the cumulative amount of impairment losses, net of use and reversals that has been recognised, where appropriate for each of the impairment stages. Accumulated impairment reduces the carrying amount of the debt instrument through the use of an allowance account under IFRS and national GAAP based on BAD, or via direct reductions that do not constitute a derecognition event under national GAAP based on BAD;

for debt instruments measured at fair value through other comprehensive income under IFRS, accumulated impairment is the sum of expected credit losses and their variations recognised as a reduction of fair value on a given instrument since initial recognition;

for debt instruments at fair value through equity under national GAAP based on BAD subject to impairment, accumulated impairment is the cumulative amount of impairment losses, net of use and reversals that has been recognised. The reduction in the carrying amount is either made through use of an allowance account or via direct reductions that do not constitute a derecognition event.