[development-axapta] Process a Return Order In Code

[branjema]

Does anyone know the basic steps to process a Sales Return Order in Code for AX 
2009?

I know it starts in the Return Order Details.  It seems like all I need to do 
is 

1. create a sales order and lines (grabbing RMA#)
2. Link by Lotid to orignial Sales Order
3. Post the return in the inventory movement Journal

Does that sound right and how do i generate the RMA#.

Thanks in advance.