R3 Data Service of a VC UI inside a task do not work

Hi,

I created a Visual Composer UI that includes one R3 Data Service to fetch some data from the backend ERP.

I assigned this UI to a Human Activity Task in our BPM model.

All of them are deployed to our BPM 7.3 Server.

The deployed WebDynpro Java UI (created by Visual Composer) works fine by its own. When we start the process and the UI start from a UWL task, the connection to the backend ERP is ignored.

Any ideas?