Solution Manger Key

Hi ;

I am Installing SAP nw 04 Ides Sr1 and Solution manager is mandatory for installation. i am using solution manager for first time.

can any one tell me how to generate solution manager key

from tr code SMSY.(I have defined system but key generation option is not there)

And i am also confused about solution manger license key from market place.wheather it is mandatory to install permanent license key before generating solution manager key for further installation.

Regards

Nilesh