Hi @hizkiakusnadi ,
I couldn’t find the node you are using in your workflow, could you share if the node comes from KNIME Hub or a KNIME partner? As I’m only aware of KNIME reading from 4HANA using DB connection nodes.
The error message itself appears to come from SAP when a user with insufficient role or authorizations attempts to execute the function module. I was able to find available authorizations for BW/4Hana that you can try to add to your service user you’re using to make the connection in the workflow.