IS/RWB no connection to SLD

Dear experts,

I have troubles with my connection to the SLD from the IB and the RWB. For example, when I click component monitoring in the RWB I get this message:

<b>Error during communication with System Landscape Directory: User credentials are invalid or user is denied access</b>

Which user is this, and where can I adapt the password. Probably in the XI's exchange profile??

Thanks in advance.