For buyers contracting authority
Pick 72246000 when the advice covers a system as a whole, hardware, networks, applications and the integration between them, rather than the software layer alone. A contracting authority uses it for an architecture review, an integration or platform study, or a longer advisory and support engagement that wraps skilled specialists around an in-house team.
The boundary that trips authorities is Software consultancy services (72266000). Reserve that code for advice scoped strictly to software: what to build or buy, how to architect the application. Choose 72246000 when the question reaches across the wider technical estate.
Watch two more neighbours. Systems and technical consultancy services (72220000) is a separate, near-identically-named branch with its own children, so it is easy to land on by accident: 72246000 is the consultancy leaf nested under the analysis and programming family, while 72220000 is the standalone consultancy family. Contract systems analysis and programming services (72245000) is the other near pick, and the line there is hands-on delivery labour versus advice. Where a single contract folds consultancy into a larger support or resourcing bundle, set the primary CPV code by the dominant deliverable, not by the whole package.