Return Delivery re-assignment of serial number issue in VL01N0

Dear Experts,

i am configuring materiel rerun process from customer , my requirement is very simple i need toreturn customer rejected material to sales order stock , i did all configuration successfully and able to create return delivery but when i am doing the PGI it is asking to enter serial number ,

I want to use the same serial number which is already used but when i am trying to use it . it shows the below screen.

My question is if i use the same serial number , will this serial number allow me to return back the material to sales order stock ?

i search the post some one told to change the status through IQ02 , i tried it also but i am unable to change the status the checkbook is grayed and non editable .

if above process cant be achieved ,is there any process to just return the material to sales order stock on same sales order.

Many Thanks