LCR_LIST_BUSINESS_SYSTEMS in the sldcheck

Hi forum,

I am just setting up an SLD... everything works fine, just when I am doing an sldcheck I get this error:

SLD server access settings:
  host name:   XXXXXXX
  port number: 50100
  user       : myUser
Use transaction SLDAPICUST if you wish to maintain the SLD server access data
Launching the SLD GUI in a separate browser window...
=> Verify in the browser GUI that the SLD is in a healthy running state!

Calling function LCR_LIST_BUSINESS_SYSTEMS
Retrieving data from the SLD server...
Function call returned exception code     4
=> Check whether the SLD is running!

All other checks are successful.

Any ideas where to search for the error.

ThankX!