English to French Other Human Resources

Once approval is received, the employee must fill out a Purchase Requisition Form and submit it to Corporate Procurement. A Purchase Order will then be cut from xxx to the vendor. If product is to be taken from xx inventory, the vendor must sign a Prior Approval Authorization Form,
MSO opens the job, and procurement places the purchase order.

MSO = marketing and sales office ici ?
Le Service Marketing et ventes ... ?
merci