[ESMA 70-872942901-35 MiFIR transparency Q&A, Q&A 2.3]

Yes, the investment firm can outsource the reporting of OTC transactions to an APA to a third party. However, the investment firm will remain fully responsible for discharging its obligations under MiFID II/MiFIR. Moreover, in case of outsourcing the reporting of OTC transactions to a third party, the investment firm has to ensure that the third party informs the APA of the transparency regime applicable to the investment firm subject to the reporting obligation. This ensures that the APA is in a position to make the transaction public using the transparency regime applicable to the investment firm subject to the reporting obligation.