connection issues from RWB to business system proxy runtime

Dear friends,

In the RWB of integration server, I also need to monitor the messages in the proxy runtime of business system, according to the guides we created the user PIRWBUSER in the business system with the same password in the integration server, afterwards I could search the message list from business system without any login information, but when I click the button 'Details' to find the details of the message, a pop-up window appears with the error message 'No switch to HTTPS occurred, so it is not secure to send a password' and prompts me to enter the user id and password for login to the target business system.

The problem is that I can't expose the password of PIRWBUSER and I don't want to create another user in the business system for this purpose, does anybody know what other configurations should I do for retrieve the message details automatically without any login information like retrieving the message list.

Kind regards,

Bean