How do I match vendor field tickets to purchase orders in construction?

Key takeaways

• Vergo proposes the coding by inference from your own accounting structure and job cost history—no rule library to build, no keyword lists to maintain, and new vendors are coded on first sight.
• Field tickets must be signed by the site supervisor at the time of delivery or work completion and logged against the corresponding PO line immediately.
• Variances between field ticket quantities and PO line items should be flagged and resolved with the project manager before the vendor invoice arrives.
• A three-way match—comparing the original PO, accumulated signed field tickets, and the vendor invoice—creates a defensible audit trail before payment approval.
• Construction-specific tolerances by trade and cost-code requirements on field tickets reduce manual judgment calls and coding errors at the AP desk.

Why field ticket and PO matching breaks down in construction

Field tickets are generated at the job site—often on paper, handwritten, or submitted via a subcontractor's own format. By the time they reach the AP team, critical context is missing: which phase of work, which cost code, which change order, and whether the quantities actually reflect what was installed or delivered. Common breakdowns include quantity drift when actual hours or materials exceed original PO line items due to scope creep, format mismatches when vendors use non-standard unit descriptions or lump-sum entries, missing supervisor sign-off when tickets arrive without documented approval from the foreman who verified the work, and split deliveries where partial field tickets accumulate without a clear running total against the committed amount. Generic AP processes were never designed to solve these construction-specific matching problems.

The recommended workflow for field ticket to PO matching

Require field ticket capture at delivery or completion: the foreman or site superintendent must sign and date the vendor's field ticket at the time of service or material delivery, with both parties retaining a copy and digital capture strongly preferred. Log field tickets against the open PO in real time: as signed tickets arrive, the project manager or field coordinator enters quantities, cost codes, and the associated PO number, with each entry reducing the remaining committed balance on that PO line. Flag variances before invoice receipt: if a field ticket quantity exceeds the PO line balance, route it immediately to the project manager for a change order determination—before the vendor's invoice arrives—so discrepancies are resolved upstream and payment holds are prevented downstream.

A practical example: three-way match at invoice entry

When the vendor invoice arrives, AP matches it against the original PO, the accumulated signed field tickets, and the invoice line items. All three must reconcile on quantity, unit rate, and cost code before the invoice is approved for payment. If the invoice exceeds field ticket totals or references work not on the PO, place the invoice in a formal dispute queue with a written exception note. Assign resolution to the project manager with a defined response window—typically 48–72 hours. Once matched and approved, post the invoice to the correct job, phase, and cost code in your construction ERP so committed costs update and project financials stay current. This five-step process creates a defensible audit trail from job site to final payment.

Tips for construction AP teams

Establish PO tolerance thresholds by trade so AP staff know when to auto-approve versus escalate: define acceptable variance bands such as ±5% for material deliveries or ±0% for subcontractor labor, eliminating judgment calls. Use a field ticket log as a control document: maintain a running log per PO that shows each ticket number, date, quantity received, and running balance to prevent duplicate ticket submission—a common vendor billing tactic. Require cost codes on the ticket, not just the invoice: train field staff and subcontractors to include the project cost code on signed field tickets, because retro-coding at the AP desk introduces errors and slows approval cycles. Set invoice submission rules in your subcontract by including a clause requiring that invoices be supported by signed field tickets before AP will process payment, shifting the burden of documentation to the vendor.

How Vergo handles this

Vergo runs AP invoices, card spend, and employee reimbursements through one coding model—same coding, same review, one reconciliation. For field ticket matching, Vergo proposes the coding by inference from your own accounting structure and job cost history: no rule library to build, no keyword lists to maintain, and new vendors are coded on first sight. Every coding shows why it was chosen, so a reviewer confirms in seconds instead of re-coding by hand. Approval workflows are optional and fit how you already control spend: route by GL account, by amount, or by project—or skip approval flows entirely and let policy flags catch only what breaks a rule. Transactions are ready to code the moment they happen—no waiting for clearing—and once they clear, they sync into your accounting or ERP software. Vergo integrates with every ERP and accounting software, so matched invoices post directly with full job cost data.

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