If you want to retrieve information about users and roles in the SAP Application Server Java (AS Java), there aren't many alternatives.
One of the most standard approaches is to use the SPML protocol (Service Provisioning Markup Language).
There is official documentation available on this topic: link.
In this article, I would like to share a few working examples and some practical advice on how to use the SPML protocol to connect to SAP AS Java from third-party applications.
from New blog articles in SAP Community https://ift.tt/tQF5OuJ