3-Way Matching & Vendor Credits

3-way matching checks a vendor's invoice against the purchase order you sent and what you actually received, so you only pay for what you ordered and got. When something doesn't line up, vendor credits help you track the money the vendor owes you back.

3-Way Matching Overview

What it is: A match links one purchase order to one vendor invoice and compares them line by line, along with the quantities you received.

Why you'd use it:

  • Catch short shipments before you pay
  • Spot price increases the vendor didn't tell you about
  • Keep a clear record of what was approved for payment and why

How it fits together:

Purchase Order  (what you ordered)
      +
Receiving       (what arrived)
      +
Invoice         (what you're billed)
      ↓
Match → Matched, Variance, or Disputed
      ↓
Vendor Credit   (for anything the vendor owes back)

Lines are paired by vendor item, so the invoice items need to be matched to your vendor items first (see Matching Items).

Match Statuses

Status What it means
Pending Created but not yet settled
Matched Every line agrees. A perfect match is approved automatically.
Variance Some lines differ in quantity or price, or don't appear on both documents
Disputed The total difference is large (more than 25%) and needs a closer look
Resolved Someone reviewed the match and approved it for payment

Sign in to read the full guide

Step-by-step instructions, screenshots and videos for every part of Prep Station are available to everyone on a Prep Station account.

Also in this guide

  • Matching an Invoice to a Purchase Order
  • Reviewing a Match
  • Vendor Credits
  • Common Questions
  • Next Steps

Last updated: November 14, 2026