Where a transaction takes place in a convertible bond, reverse convertible bond or reverse convertible note (the main instrument) and the instrument into which the bond can be converted is traded on a trading venue the transaction is reportable under Article 26(2)(b) of MiFIR. Where a transaction report is made on the basis of the instrument being in scope of Article 26(2)(b) of MiFIR the underlying instrument into which the main instrument can be converted should be reported in field 47 of RTS 22. Where the convertible bond, the reverse convertible bond or the reverse convertible note is also in scope of Article 26(2)(a) of MiFIR then the underlying does not need to be populated in the transaction report as only the ISIN of the convertible bond needs to be reported (in field 41 of RTS 22).