For buyers contracting authority
The cleanest way to place 72268000 is against the 48000000 package family: those codes classify the product, while 72268000 classifies the service of supplying it. Reach for it when the contract obtains software to run, through purchase, licensing, reselling or renewal, rather than building or configuring it. The deliverable is the licensed product in the authority's hands, with whatever supply paperwork and light onboarding come with it.
In practice the split is about naming: if a notice names a specific product to be licensed, authorities often tag the 48 code; if it procures a reseller or a licensing channel across products, 72268000 fits.
The neighbours inside the family are implementation (72263000), which stands the software up, and support (72261000), which keeps users running on it. A large estate deal can fold supply, rollout and support together, in which case the primary CPV code should follow the dominant spend.