HTTP 403 - Forbidden - SOLMAN WORKCENTER

Hi Gurus,

I am trying to create a new system in solman workcenter under solman administration --> solutions.

I keep getting the error :

URL call was terminated because the corresponding service is not available.

Note
The termination occurred in system with error code 403 and for the reason Forbidden.

What can I do?

Please select a valid URL.

HTTP 403 - Forbidden

Your SAP Internet Communication Framework Team

I have attached a screen shot of the error

Please help!!!