Hi Andrea
You may take a look at note 1531236 and check the following:
- Find RFC Destination in RSTPRFC > BW Client
- Check if Utilities > Test > Connection & Authorization Test are ok for the RFC Destination in SM59
- Check if User & Password are defined in "Logon & Security" tab.
Also, please attach the error screenshot in the transport log.
Best regards,
Chuan