Error when downloading idoc's to XI

Hi,

i tried to send IDoc's via xi 3.0 to a external http_adapter. I configured 2 business systems 'SAPI01' and 'BC_EXTERN' in the SLD. I refreshed the cache and assigned the systems to the Integration scenario.

When i startet the download of mestyp 'HRCC1DNPERSO', i saw in SM58 following error : No service for system SAPI01, client 800 in Integration Directory'.

Then i refreshed the cache on the XI server and tried again, as a result i got following error :

'Transaction IDX1: Port SAPI01, client 800, RFC destination contain error'.

I have no idea, can anybody give me a hint ?

Rudolph