Hi @tobias.hahn

A few points to address

1. To consume data from a Platform session you need your account team to set up a platform account for you. This includes being provided with a MachineID, for which you can then set a password and generate an EDP (RDP) API AppKey (using the AppKey generator in Eikon or the API Playground).
2. If you have not already done so, please read this article - which provides a good overview of RDP Library (which is in Beta) and links to various examples in Python and .NET.
3. Note that you don't have to use the RDP library to consume data from the Platform - you can use REST APIs (and Websocket for streaming) to consume data directly from the platform.
4. In terms of the data sources available on the Platform my understanding is that some datasets are ready, some are in beta, some in alpha and some are still being onboard. The plan is to eventually offer most of our disparate data services/source on the platform.
5. If you already have Eikon, then in theory you can use the RDP library with a Desktop session to consume data from your local Eikon installation and then when the Platform data source you are interested in moves out of Beta mode, you could switch your session from Desktop to Platform and start consuming the data from the platform instead.
6. The RDP library will allow multiple session types within the same application - so you could consume some data from Eikon and some from the Platform if required
7. Not a content expert, but I have been advised that not every single bit of Eikon data will be available on the platform e.g. due to 3rd party licencing issues - but most of it will eventually.

Hello @tobias.hahn

The other RDP library resource for starter is an introduction to RDP document page.

To authenticate with a Platform session, you need username, password and App Key credentials as suggested by @Umer Nalla.

Once you have contact your account team to help you setup your account, you can generate your own App Key via Eikon Desktop/Refinitiv Workspace AppKey Generator application (go to the Search Bar and type "APP KEY", then select the AppKey Generator) or via the App Key Generator web site.