Purchase order automation software for distributors: buy or build?

Two different jobs share one name

When a distributor searches for purchase order automation software, they usually mean one of two things. The tools for each are different, so it helps to name them first.

• POs coming in (order-to-cash). Your customers send you purchase orders by email, PDF, EDI or a portal. Someone turns each one into a sales order in your ERP.
• POs going out (procure-to-pay). You buy from suppliers. Someone creates the PO, gets it approved, sends it, receives the goods, and matches the supplier's invoice to the PO before paying.

Many distributors have pain on both sides. This guide covers both, using vendors' own pages as checked on Oct. 26, 2026. We don't resell any of these products.

What a purchase order costs

On the buying side there's a recent public benchmark. An APQC infographic, The $4 Million Procurement Gap, puts the cost to process a purchase order at $13.85 at the 25th percentile, $29.59 at the median and $54.50 at the 75th percentile. Top performers turn out about 4,000 orders per full-time employee, against 1,619 for bottom performers, and issue a PO in one day instead of 2.5. The infographic doesn't give its sample size or survey year, so treat it as a rough guide.

Cost to process one purchase order

APQC benchmark, by percentile. Lower is better.

1. 25th percentileLowest-cost quarter$13.85
2. Median$29.59
3. 75th percentileHighest-cost quarter$54.50

Source: APQC, The $4 Million Procurement Gap (infographic). No sample size or year stated.

APQC lists "eliminate manual inputs and enable automation" as one practice of top performers, next to standardizing workflows and approval paths. Most of the gap comes from how the work is done, not from which software is installed.

Check your ERP first

Before buying anything, see what your ERP already does. Most distributor ERPs have more purchasing automation than people use.

• NetSuite. Oracle's NetSuite help says you can use SuiteFlow to build your own approval workflow for purchase requests and purchase orders, with routing rules and approval limits. With it turned on, new POs start in Pending Approval.
• Microsoft Dynamics 365 Business Central. Microsoft's AI overview for Business Central describes a Payables Agent that watches a mailbox for vendor invoices, extracts the details and matches them to purchase orders and receipts. A separate Sales Order Agent handles customer quote requests by email and turns a confirmed quote into an order. Microsoft also notes the earlier Copilot e-document matching is deprecated in favor of the Payables Agent, which shows how fast these features change.
• Acumatica. Acumatica's purchase order management page describes creating POs automatically from stock levels and replenishment rules, approval rules by order type, vendor and amount, and creating AP vouchers from receipts.

If you're on Epicor Prophet 21, Sage 100 or QuickBooks, ask your partner the same questions: can it suggest POs from stock levels, route approvals, and match invoices to receipts? Our guides on NetSuite and QuickBooks cover the customer-order side for those systems.

What packaged software covers

For POs going out, Procurify says it can auto-generate POs from approved requests, send them to vendors, track received items, and capture and match vendor invoices. It quotes each customer and shows no list price. Precoro lists POs, automated approvals and 2- and 3-way matching in its Core plan, which it says starts at $499 a month billed annually.

For POs coming in, Conexiom says it automates orders and invoices, has native integrations with 40+ ERPs including Epicor, Microsoft Dynamics 365, Oracle NetSuite and Sage, and has a 30-day average implementation. Esker says it captures orders from email, EDI, portals and other channels and creates validated orders in the ERP. Its page names SAP; ask about your ERP. Neither publishes prices.

There are also building blocks. Microsoft's AI Builder invoice model pulls standard fields, including a purchase order reference number, from invoices. Microsoft notes that because every business is unique, you may need fields the prebuilt model doesn't include, and points to custom models for that. Our guide on Power Automate for purchase orders covers where that path stops.

Supplier POs are a solved problem for most ERPs. Customer POs in a hundred formats are where the work is.

When to buy

Packaged software is the right call more often than a builder like us would like to admit.

• Your problem is mostly outgoing POs, approvals and matching, and your ERP is a mainstream one the tool lists.
• Your process is standard: requests, approvals by amount, receive, match, pay.
• Your customer POs mostly come by EDI or a portal you can export from, and the packaged tool supports your ERP.
• You'd rather pay a subscription than own anything.

When to build

A custom build makes sense when what you need doesn't fit the packages.

• Customer POs vary a lot. Many customers, each with their own PDF layout, part numbers and units. Matching their part numbers to yours is usually the hard part, and it's specific to you.
• Your rules are specific. Contract pricing, minimums, substitutions, ship-to codes, credit holds. If a person checks these today, the software has to check them too.
• Your ERP isn't on the list, or it's an older version with a limited API.
• You need both sides to talk. For example, a customer PO that should trigger a supplier PO for a drop ship.

Either way, keep a person approving. Software reads the PO and fills in a draft; a person checks the flags and releases it. We explain why in human-in-the-loop automation.

Questions to ask any vendor, or any builder

1. Which of our ERPs and versions do you connect to, and how: API, file import or screen automation?
2. What happens when a customer changes their PO layout?
3. Where do our documents and data go, and who can see them?
4. Who maps customer part numbers to ours, and who keeps that list up to date?
5. What does a person review before anything posts to the ERP?
6. How will we measure it? Minutes per PO and errors, before and after. See measuring office automation ROI.

How Peekgentic does it

We build the reading, matching and checking around your inbox and post drafts into your ERP for a person to approve: customer POs into sales orders, and supplier documents against your POs. Your team keeps working in the ERP it already uses. See our purchasing build and our order processing build for how each works.