NW Gateway Client Problem

Hi experts,

I have a problem when executing my web service. it gave me the following Error.

HTTP Send failed: HTTPIO_ERROR_CUSTOM_MYSAPSSO-Fehlermeldung beim Senden der Daten.

Message no. /IWFND/COS_SUTIL100

I can access my service through REST client in chrome.

Please help me on what I should do on this.

and let me know if you need more information.

Thank you so much.

-Martin-