Can my students sit IGCSE ICT 0417 in the same series as IGCSE Computer Science 0478?

Yes, candidates can sit both Cambridge IGCSE ICT and Cambridge IGCSE Computer Science in the same series, there are no restrictions. You can check whether Cambridge IGCSE Computer Science 0478 has a restriction in Section 5, the Combining with other syllabus sub-section in the 2023-2025 syllabus here.