Create tile for web dynpro java application

Hello, experts!

I have a problem with create tile for web dynpro java application.

I made next steps:

1 Created sementik in /UI2/SEMOBJ 

2 Created a panel in LPD_CUST

I have problem in step 2. When I created it I need proveded system alias. I attached screen. In help info I see sm59, but i think i need other preference.

Please, help me. How I can create panel for web dynpro java if java application deploy on sap portal?