When I use my DFO credentials with DatastreamDSWS.Datastream I get the following error:
Exception: User 'ZHRY001' not entitled to ClientApi service.
Attachments: Up to 2 attachments (including images) can be used with a maximum of 512.0 KiB each and 1.0 MiB total.
From the error message, your ID is not entitled for the API service. You need to contact the DataStream support team via MyRefinitiv to verify the ID is correctly entitled.