For ICT services supporting critical or important functions, the main contract should say whether subcontracting is permitted and, if permitted, under what conditions. A simple consent sentence is too thin; the contract needs operational conditions that let the financial entity monitor the chain and object when material changes exceed risk tolerance.
The clauses should also flow through core DORA controls to the subcontracting chain: service levels, continuity, security requirements, contingency plans, incident assistance, access and audit, cooperation with competent and resolution authorities, notification of material changes, and termination rights.