After logging in the system (by using BBPSTART service), when I try to enter at every link to execute a task (create shopping cart, create bid invitation, etc.) the main page reopens again in the internal frame of the page and the left menu is displayed twice and doesn't show the page that I've asked to execute. In both menus, it doesn't matter what link I click, the page reopens again in the internal frame. If I execute, for example, the service BBP_BID_INV from the transaction SICF, the web browser shows the bid invitation correctly. Does anybody know how to solve this problem?
Thanks in advance,