Interal procurement is a complete purchasing system that includes all the tools needed for the fluid management of requisitions and purchases.
If this function is required for your business, you can use the functions of requisitions that are regulated as required by strict rules of permitted amounts and levels of approval.
With the well-established requisitions system of Interal procurement (supply chain), the buyer can make an informed decision because all the rules of procurement requests were met. After approvals (or rejections) have been processed; the only thing remaining is to negotiate prices!
An intelligent system also allows the buyer to transfer requisitions into orders or going through an RFQ process (Request for quotation) to obtain the best possible conditions for his business.