What type of license should the user be assigned when passing transactions through the DI Server?

What type of license should the user be assigned when passing transactions through the DI Server?

We used to assign indirect access licenses to users that were just using the DI Server. We have one add-on developer that says that the user has to be a Profession license. Current environment is SAP B1 9.0 PL10. My understanding was that you could have up to 10 users assigned to a single DI Server license.