There is some hesitancy in relying on the Annex to determine whether a supplier is providing an ICT service. This concern stems from two key issues: firstly, the Annex appears to include service types that extend beyond the original definition of ICT services under DORA. Secondly, there is an implication that a single identifier or code must be consistently applied across the entire supply chain. For instance, if a telecommunications provider is classified under a specific code (e.g., S10 for Telecom Carrier Services), that same code might need to be used for all associated suppliers, even if they provide unrelated services such as ICT helpdesk support (e.g., S03). This approach suggests that the Annex primarily addresses direct third-party service providers, rather than entities further along the supply chain.