I'm working on a design that includes production and pre-production (test) environments. Ideally, the pre-production Splunk environment should be functionally identical to the production Splunk environment to provide a suitable testing platform.
The limitations on enterprise features in the Personalized Dev/Test and Free licences make them unsuitable.
That leaves me with the Enterprise and Sales Trial licences. I don't expect clients to be willing do buy an additional Enterprise licence for a pre-production environment, and I also don't expect a sales associate would continue to issue sale trial licences.
I haven't been able to find any documentation around using an enterprise licence in a pre-production environment. I did read the FAQ and searched answers (Though I received a HTTP500 after the first page) and was not able to find a clear answer.