Understanding the Procurement Cycle: PR vs. PO
In professional procurement, managing expenses requires a structured workflow to prevent financial mismanagement and wasted time [1]. Two of the most critical documents in this process are the purchase requisition (PR) and the purchase order (PO). While these terms are often used interchangeably, they serve entirely different functions and occur at different stages of the purchasing cycle.
What is a Purchase Requisition?
A purchase requisition is an internal document used by an employee to request the acquisition of goods or services from an external vendor [1]. It is essentially a request for permission to spend company funds.
The primary purpose of a PR is to obtain formal approval from the appropriate internal parties—such as department managers or the finance team—before any commitment is made to a supplier [1]. Because it is an internal document, a purchase requisition does not authorize a purchase and has no legal standing with an external vendor.
The Purchase Requisition Workflow
The typical lifecycle of a purchase requisition involves several internal checkpoints to ensure the spend is justified and budgeted:
- Identification: An employee identifies a need for specific goods or services.
- Submission: The employee completes a purchase requisition form detailing the requested items.
- Review: The form is routed to department managers, the procurement team, and the finance department for review [1].
- Verification: Approvers check factors such as current inventory levels, vendor reliability, business necessity, and available budget [1].
- Approval: Once the request is approved, the procurement team uses the PR as the basis to create a purchase order.
What is a Purchase Order?
A purchase order is a formal document issued by a buyer to a vendor, indicating the types, quantities, and agreed prices for products or services [1]. Unlike the requisition, the PO is an external document.
Once a purchase order is sent to a vendor and accepted, it becomes a legally binding contract between the two parties [1]. It formalizes the agreement and protects both the buyer and the seller by documenting the exact terms of the transaction.
Key Components of a Purchase Order
To ensure clarity and legal enforceability, a PO typically includes the following information:
- PO Number: A unique identifier used for tracking and matching with invoices.
- Item Specifications: Detailed descriptions of the goods or services requested.
- Quantity: The exact amount of each item to be supplied.
- Price: The agreed-upon unit price and total cost.
- Delivery Dates: The expected timeline for receiving the goods or services.
- Terms and Conditions: Payment terms, shipping methods, and legal stipulations.
Key Differences: Purchase Requisition vs. Purchase Order
The fundamental difference between the two documents lies in their intent and audience. A PR asks for permission; a PO places the order.
| Feature | Purchase Requisition (PR) | Purchase Order (PO) |
|---|---|---|
| Purpose | Internal request for approval [1] | External order to a vendor [1] |
| Document Type | Internal notification | Legally binding contract [1] |
| Timing | Created first | Created after PR approval [1] |
| Recipient | Internal management/Finance | External supplier/Vendor |
| Authorization | Requests authorization | Acts as authorization |
The Practical Importance of the PR-to-PO Process
Implementing a strict separation between requisitions and orders provides several strategic advantages for procurement teams:
Stronger Financial Control
By requiring a PR before a PO, companies can prevent “maverick spending”—unauthorized purchases made outside of official channels. This ensures that every expense is vetted by finance before the company is legally committed to pay a vendor [1].
Improved Budgeting and Forecasting
Requisitions allow finance teams to see upcoming expenses before they actually occur. This visibility helps in managing cash flow and ensuring that department budgets are not exceeded mid-quarter [1].
Enhanced Supplier Relationships
Sending a formal PO rather than an informal email or phone call reduces errors in order fulfillment. Because the PO outlines exact quantities and prices, there is less room for dispute during the invoicing and payment stage [1].
Common Pitfalls in the Procurement Workflow
Many organizations struggle with inefficiencies in this process, often stemming from the following mistakes:
- Skipping the PR: Moving straight to a PO can lead to budget overruns and a lack of internal oversight.
- Manual Data Entry: Manually copying information from a PR to a PO increases the risk of typos and ordering errors.
- Slow Approval Cycles: When PRs sit in an approver’s inbox for days, it can lead to production delays or missed supplier deadlines.
To mitigate these risks, many businesses leverage procurement software to automate the transition from an approved requisition to a generated purchase order, reducing manual effort and increasing accuracy [1].
FAQ
Can a company operate without purchase requisitions?
Yes, small businesses may skip PRs for simplicity. However, as organizations grow, PRs become essential for maintaining financial control and preventing unauthorized spending.
Is a purchase order a contract?
Yes, once a purchase order is issued to a vendor and accepted by them, it typically becomes a legally binding agreement outlining the terms of the sale.