Purchase Order (PO) Process: A Step-by-Step Guide for Manufacturers
The purchase order process is the structured sequence a company follows to request, approve, and buy materials from suppliers. It begins with an internal indent, moves through approval and PO creation, and ends with goods receipt and invoice matching. A clear PO process reduces errors, controls spend, and creates an audit trail for every purchase.
What Is a Purchase Order?
A purchase order (PO) is a formal document a buyer sends to a supplier that lists the items required, quantities, agreed rates, delivery date, and terms of payment. Once the supplier accepts it, the PO becomes a legally binding contract. For an SME manufacturer in India, the PO is the backbone of the procure-to-pay cycle: it links the demand raised on the shop floor to the money that eventually leaves the bank.
Why the Purchase Order Process Matters
Without a defined process, purchases happen over phone calls, WhatsApp messages, and email threads that are impossible to track. This leads to duplicate orders, wrong quantities, price disputes, and payments made against goods that were never received. A documented PO process gives you spend visibility, enforces approval limits, and makes GST-compliant record-keeping far easier during audits.
The Purchase Order Process Step by Step
1. Raise an Indent or Purchase Requisition
The cycle starts when a department, store, or production team identifies a need for raw material, consumables, or spares. They raise an indent (also called a purchase requisition) specifying the item, quantity, and required-by date. This is the first control point — demand is captured in writing rather than a verbal request.
2. Get Approval
The indent goes to the reporting manager or purchase head for approval. Many manufacturers set value-based approval limits, so a small consumable request clears quickly while a high-value order needs senior sign-off. Digital approvals remove the delay of chasing signatures on paper.
3. Float Enquiries and Compare Quotations
The purchase team sends enquiries to shortlisted vendors, collects quotations, and compares them on price, lead time, quality, and payment terms. A side-by-side quotation comparison ensures you are not overpaying and helps justify vendor selection later.
4. Create and Issue the Purchase Order
Once a vendor is selected, the buyer creates the PO with item details, rates, taxes (GST), delivery schedule, and terms, then issues it to the supplier. Each PO should carry a unique number for easy tracking. The supplier confirms acceptance before dispatching goods.
5. Receive Goods and Raise a GRN
When the material arrives, the store team checks it against the PO and prepares a Goods Receipt Note (GRN), recording accepted and rejected quantities. The GRN updates stock and confirms what was actually delivered versus what was ordered.
6. Three-Way Match and Payment
Before releasing payment, the accounts team performs a three-way match — comparing the PO, the GRN, and the supplier invoice. If all three agree on item, quantity, and rate, the invoice is cleared for payment. Mismatches are flagged for review, preventing overpayment or payment for undelivered goods.
Common Mistakes in the PO Process
Typical problems include raising POs after goods have already arrived, skipping quotation comparison, no approval trail for high-value orders, and manual matching that misses price differences. Moving the process onto purchase and store management software closes these gaps by enforcing each step in sequence and keeping a searchable record. Teams that also track shop-floor demand through production management software can link material requirements directly to indents, reducing stockouts and rush purchases.
Manual vs. Digital PO Process
A manual, paper-based PO process is slow, error-prone, and hard to audit. A digital workflow captures indents, approvals, POs, GRNs, and matching in one connected system, giving real-time spend visibility and a complete history for every order. You can explore the specific capabilities on the features page and review options on the pricing page.
Frequently Asked Questions
What is the difference between an indent and a purchase order?
An indent (purchase requisition) is an internal request raised by a department to signal a need for material. A purchase order is the external document sent to the supplier to actually buy that material once the indent is approved.
What is a three-way match in the PO process?
A three-way match compares the purchase order, the goods receipt note (GRN), and the supplier invoice. Payment is released only when all three agree on item, quantity, and rate, which prevents overpayment and fraud.
Is a purchase order legally binding?
Yes. Once a supplier accepts a purchase order, it becomes a legally binding contract between the buyer and seller for the goods, quantities, rates, and terms listed on it.
Streamline Your Purchase Order Process
A well-run PO process protects your margins and keeps production moving. If you want to see how a connected indent-to-payment workflow works for an Indian SME manufacturer, book a demo and walk through it with your own data.