Dear,
Based on IN o QT ,the company may not be decide that customer will purchase from that company.if any another company offer with lowest price then there can be 100 % chances go for purchasing goods from them.I dont think,the above process is good why because you have already passed requirement to PP to produce goods for that customer. If he dont purchase then what will happen ?
Try to create below process,
VA01-VF01 ( F2 ) -VL01N-VF01 ( F8 ).I have simulated this scenario until VL01N. It is possible.
Note: Make sure,order quantity should be equal to picking quantity in delivery level.
Kindly let me know you want further help
Thanks,
Naren