Sales order process Packing packing and Invoice

Hi,

I want to know what are the tables are effected when we do Packing,Picking and Invoice in AX 2012. And what are the classes used to to do the Sales Order Posting.

Thank you.

You can have a look at the re-factored form letter frame work to know about the posting classes, http://technet.microsoft.com/en-us/library/hh272871.aspx

By debugging those classes you can probably find out the tables used in the process.