It is possible my application use a SYSTEMIC USER to access NEXUS Repository without infringing the license rules?
@esdras.page, as you may know, Sonatype Nexus Repository is licensed by contributing user in your organization, not by the number of accounts you create in the software itself. Because of anonymous access, or so-called ‘indirect users’ who never access Repository itself but whose work is published there from a CI server, the number of accounts can be quite different than the number of users you need to be licensed for.
So as long as you’re licensed for the full number of users in your organization, you’re free to create as many accounts as you like (or for that matter, have as many nodes as you like).