(21)To avoid double counting of liabilities for the purposes of the requirement for own funds and eligible liabilities, rules should be introduced for the deduction of holdings of eligible liabilities items that mirror the corresponding deduction approach already developed in Regulation (EU) No 575/2013 for capital instruments. Under that approach, holdings of eligible liabilities instruments should first be deducted from eligible liabilities and, to the extent there are not sufficient liabilities, those eligible liabilities instruments should be deducted from Tier 2 instruments.