Movement Types for goods

Hello friends,

Can somebody tell me

if movement type is 641 what is the transaction code,

if movement type is 657 what is the transactin code?

my client requirement is suppose customer returns the stock, how do I take it into my plant, what is the transaction code? and what is the movement type?

I want that stock first should go to blocked stock from there it should go to unrestricted use.

please give me inputs.

regards,

sekhar_sd consultant.