Error on SLDCHECK

Hi Expert,

Need your help on SLD error find the error message as below, we have configure SAP XI system and set the RFC connection between JAVA and ABAP instance it working finebut it give me message that

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!

see the below error of SLDCHECK transaction

Properties of RFC destination SAPSLDAPI

RFC host:

%%RFCSERVER%%

program id: SAPSLDAPI_PXI

gateway host:

SAPXI

gateway service: sapgw00

Testing the RFC connection to the SLD java client...

RFC ping was successful

SLD server access settings:

host name: localhost

port number: 50000

user : xiuser

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!

Summary: Connection to SLD does not work

=> Check SLD function and configurations