Study material for planning strategy 21

Dear All,

I have triggred the project through planning strategy 85 when i am making a quotation.The account assignment is done for the project.The planned cost in the network is updated in the quotation.But i am not able to get the activity cost in the

WBS element though it is available in the network level.

Is there any other setting to be done in the IMG ?

My client scenario needs a close interaction(flow) of data from PS to SD

I am trying to do DIP profile and Resource related billing.

I also understand that i may have to use planning strategy 21.Can some one kindly provide me detail study material for planning strategy 21

Rewards are assured for timely & valuable help.

Thanking you,

Best Regards,

R.Srinivasan