PO Number: Generation & Use Explained

Amy Deiko
March 12, 2025

Free Supplier Risk Scorecard Download

Download our free supplier risk scorecard here!

Download the free tool!

Now more than ever B2B are purchasing online, and while over all the processes required purchase orders or PO might not seem the main character in the film. It’s extremely important to get all the details right.

After all, without a complete purchase order, no transaction could happen. 

With that in mind, let’s dedicate ourselves to going over the basics of PO

What’s a Purchase Order?

Purchase orders play a huge role in businesses.  A purchase order (PO) serves as a legal document between the buyer and seller, detailing the specifics of the purchase, such as quantity, type, and agreed-upon price of the products or services. This formal document lays the groundwork for effective communication, clear expectations, and smooth transactions, essentially serving as a roadmap for both the buyer and seller.

The main components of PO

  • The date when the order is placed
  • Terms of payment
  • Deadlines 
  • Taxes if applicable
  • Contact information
  • Billing address 
  • The PO number 

What’s a PO number?

Each PO is assigned a unique number, acting as a distinct identifier that simplifies tracking and management. This unique identifier essentially breathes life into the lifecycle of every business purchase, providing traceability from initiation to fulfillment.

An efficient PO numbering system cannot be overstated. It ensures accuracy in records, enabling swift resolution of queries and disputes and aiding in forecasting and reporting. Integrating purchase approval software with the numbering system enhances the efficiency further. It's like a pulse check, allowing executives to monitor procurement activities and make informed decisions.

How to create a Purchase Order number?

Manual vs Automated 

Before getting started you’ll have first to determine if you are going to create the number manually or if you are going to use software for it. 

Manual PO numbers might be best suitable for small businesses that don’t have to deal with lots of purchasing. 

On the contrary, if the company is a rather large one, there will be a heavy amount of purchasing that’s required, making it logical to rely on the help of an automated program to generate it. 

But how?

Let’s find it out 

Step 1: Define the Components of the PO Number

Decide on the structure and components of your PO numbers. Typically, a PO number includes:

Prefix: Optional but often used to denote the type of PO (e.g., 'PO' for regular purchase orders).

Sequential Numbers: A unique numerical identifier that increases with each new PO.

Suffix or Year: Optionally, you can include a suffix indicating the fiscal year or other relevant information.

Step 2: Determine the Format

Choose a format that works for your organization:

Numeric: Sequential numbers only (e.g., 001, 002, 003...).

Alphanumeric: Combine letters and numbers (e.g., PO001, PO002...).

Date-based: Include the order date in the number (e.g., PO2024-001).

Step 3: Establish a Prefix (This step is not mandatory)

If you decide to use a prefix, determine what it will be, a common one is PO. This helps distinguish PO numbers from other transaction types within your organization.

Did you know ?

Step 4: Select Starting Number

Decide on the starting number for your POs. It’s common to begin with a number like 001, 1001, etc., depending on the expected volume of POs and your organization’s history.

Step 5: Incorporate Date or Year (Optional)

Consider including the year or date within the PO number if it helps track or organization purposes.

Step 6: Document the System

Create a document or guideline that explains your PO numbering system so all the involved parties are up to date. Don’t forget to include:

Explanation of each component (prefix, number sequence, suffix).

Examples of valid PO numbers.

Instructions for generating and using PO numbers correctly.

Examples of PO Number Formats:

Random Number Generator Systems:

This system randomly generates unique numbers for each purchase, adding an extra layer of security to the tracking process.

Successively Larger Numbers:

This sequential approach is straightforward. Each new purchase order is assigned a number that is one higher than the previous one, making it easy to see the total number of purchase orders at a glance.

Year and Vendor Designation Systems:

These systems incorporate specific details into the number, such as the year of the order and a code for the vendor. This approach enhances traceability and provides useful context at a glance.

Sales Orders vs. Purchase Orders:

Sales orders and purchase orders are fundamental documents in the world of business, each playing a distinct role in the supply chain. Sales orders represent the demand side of the equation, initiated by customers when they want to purchase goods or services from your company. These orders outline the specifics of what a customer needs and when they need it. On the other hand, purchase orders are generated by your company when you intend to buy goods or services from suppliers. They detail what you require, terms of the purchase, and when you need it.

Understanding the importance of these documents is crucial. Sales orders help your business manage customer demand, ensuring you fulfill orders accurately and on time. They also serve as a basis for revenue recognition, helping you track your sales performance. Meanwhile, purchase orders are vital for managing your supply chain efficiently. They allow you to control costs, negotiate favorable terms with suppliers, and maintain inventory levels that meet demand without overstocking.

Accurate Record-Keeping and Order Verification

A unique purchase order number is the linchpin of any order. Similar to a fingerprint, no two PO numbers are the same. This uniqueness provides precision in record-keeping and facilitates easy verification of orders. It makes the tracking of every item, from ordering to receiving and finally to payment, a well-orchestrated process. This precision is a powerful tool for high-level executives in auditing and compliance.

Facilitation of Inventory Management and Accounting 

Inventory management and accounting are two critical functions that rely heavily on accurate purchase order information. PO numbers provide the link that ties together these functions, enabling a unified view of procurement activities. This assists in keeping inventory at optimal levels, reducing carrying costs, and preventing stockouts. In the realm of accounting, PO numbers facilitate accurate billing, payment, and reconciliation processes.

Business Analytics, and Cash Flow Management

It's vital to understand that purchase order numbers are not just identifiers; they're valuable data points. They provide a wealth of historical data that can be analyzed to gain insights for future planning. This can influence procurement strategies, budget allocation, and cash flow management.

Supply Chain Efficiency and Vendor Management

Effective supply chain management is largely dependent on visibility and control, both of which are enhanced by purchase order numbers. They enable real-time tracking of order statuses, improving responsiveness and operational efficiency. Additionally, they help in managing vendor relationships by keeping a tab on vendor performance, which is critical for procurement-heavy businesses.

Why Automate Your Purchase Orders?

Automating the purchase order process saves time, reduces errors, and simplifies procurement. The software handles everything from order creation to tracking, eliminating manual data entry and record-keeping.

For executives, automation improves resource allocation, allowing teams to focus on strategic tasks. It also increases accuracy and speed, shortens procurement cycles, and enhances responsiveness to market changes.

Free Supplier Risk Scorecard Download

Download our free supplier risk scorecard here!

Download the free tool!

Why Use ControlHub to Automate Your Purchase Orders?

ControlHub simplifies procurement with advanced purchase order software designed for hardware-focused companies. Its built-in PO number generator ensures every transaction has a unique identifier, making it easier to track and manage orders. The user-friendly interface reduces the learning curve, helping your team get the most out of the system.

The Importance of a Purchase Order Template

A well-structured Purchase Order Template helps standardize procurement processes, ensuring orders are clear, organized, and compliant with company policies. It minimizes errors, improves communication between departments, and provides a reliable record of purchases for audits, budgeting, and vendor negotiations.

Final Thoughts

Purchase orders are essential for maintaining transparency and efficiency in procurement. A structured system for generating and managing PO numbers helps businesses and vendors track transactions accurately, improving accountability and organization

Ready to transform your purchase management? 

Access our FREE PURCHASE ORDER TEMPLATE today and streamline your processes. Simplify your procurement with our easy-to-use template, designed to save you time and reduce errors. 

Download your free template now and experience the efficiency of ControlHub!

Free Supplier Risk Scorecard Download

Download our free supplier risk scorecard here!

Download the free tool!

Free Supplier Risk Scorecard Download

Download our free supplier risk scorecard here!

Download the free tool!

Free Supplier Risk Scorecard Download

Download our free supplier risk scorecard here!

Download the free tool!
Amy Deiko
-
Amy is a procurement writer and MBA student with a passion for innovative businesses processes, she loves simplifying complex topics and sharing insights to help companies optimize their daily operations.

Table of Contents