Procurement Workflow vs. Invoice Verification
Field Materials automates how you order and receive materials. CheckIT verifies that what you were invoiced matches what you contracted for.
Different jobs. Different ledger lines. Often both.
Quick verdict
What Field Materials AI does
Field Materials is an AI-native procurement platform for self-performing GCs and specialty trades — mechanical, electrical, civil, concrete, framing, drywall. It runs the full chain: RFQs to vendors, AI-generated POs, mobile capture of packing slips, AP automation with a conditional 3-way match, inventory tracking across warehouse and vans, prefab BOM workflows from BIM, and a February 2026 Pricing Intelligence module that benchmarks materials against historical and network pricing.
- RFQ workflow — multi-vendor quotes, AI-compared, converted to itemized POs
- Mobile delivery capture — field team photographs packing slips, AI matches to PO
- Conditional 3-way match — PO ↔ delivery ↔ invoice, posts approved to ERP
- Pricing Intelligence + Prefab modules — material benchmarking and BIM-driven BOMs
What its 3-way match doesn't do is the question this page is about: verify the invoice line against the contract rate.
- Whether the invoiced rate matches the contract, quote, or rate sheet — not just the PO Field Materials generated
- Invoices where the original PO price or quantity was wrong to begin with — the 3-way match confirms it, it doesn't catch it
- Invoices from subs, T&M tickets, or vendors that never entered the Field Materials procurement chain
- Dollar-quantified, severity-ranked discrepancies per line
- Verification when ERP receipt write-back isn't configured — flagged as unresolved on Viewpoint Vista in a 2026 Capterra review
What CheckIT Invoice does
CheckIT Invoice compares every line of every invoice against the contract, quote, rate sheet, or rolling 12-month historical baseline. Upload a contract baseline and an invoice as PDFs and CheckIT returns an explainable, dollar-quantified, severity-ranked report telling you which lines are wrong, why, and by how much. No ERP. No procurement workflow. No field-team rollout. It works on any invoice — including subs, T&M tickets, and vendor invoices that never touched a procurement system.
- Line-item verification against contract, quote, rate sheet, or 12-month historical
- Explainable dollar delta per line, severity-ranked, audit-ready
- Works on any invoice — including subs and channels FM never touched
- 75% less review time per document. No ERP. No implementation project.
Pilots point to $50K–$150K in annual recovered margin — without an integration project or procurement workflow rollout. Extrapolated from early-customer data. Results vary by invoice volume and contract complexity.
Feature comparison
Field Materials matches the PO. CheckIT verifies the contract.
Field Materials' 3-way match is a real feature, and when the workflow is fully adopted it works. The catch is that the match is conditional. For Field Materials to verify an invoice, three things have to be true: the PO had to be created in Field Materials, the delivery slip had to be captured by your field team in Field Materials, and your ERP has to write material receipts back to Field Materials. A 2026 Capterra reviewer flagged the third condition directly on Viewpoint Vista — material receipts do not yet push back, “though Field Materials is working to resolve this.”
Our crews capture packing slips. The POs flow through. But when the original PO was wrong, the 3-way match was confidently wrong too. We still had a person opening the contract to check the math.
Heavy Civil GC, $75–100M revenue
CheckIT asks a different question entirely. Not “does the invoice match the PO” but “does the invoice match the contract.” The contract baseline — the quote, the rate sheet, the 12-month historical — is what the contractor and the vendor actually agreed to. CheckIT compares every line against that baseline and returns a dollar-by-dollar, severity-ranked explanation. No PO requirement. No delivery-slip requirement. No ERP integration to wait on.
If you need Field Materials: a self-performing mechanical, electrical, civil, or concrete sub running RFQs, POs, and field delivery capture in one system.
Your crews are photographing packing slips, your POs are flowing through your ERP, and you need one AI-native system running the procurement chain end-to-end. That's a workflow problem, and Field Materials was built for it. It still leaves the contract-verification question open on every invoice that closes against that PO.
Use CheckIT if you need every invoice line verified against the contract — regardless of how it arrived.
If your invoices come from subs, vendors, T&M tickets, or any channel that never touched a procurement workflow, CheckIT verifies line-by-line against the contract baseline with no PO requirement, no field capture, and no ERP integration. For PMs, controllers, and CFOs who need to defend the number on document one — not after a six-month workflow rollout — CheckIT delivers an explainable, audit-ready report in minutes.
Or run both — Field Materials for buying, CheckIT for billing.
Keep the procurement chain where it is and hand CheckIT the same invoices with the quote you bid from. It runs on the documents you already have, no connection between systems needed. And if you adopted it mainly for the invoice matching, run one job through the free audit and compare before your next renewal.
What this looks like in your trade
Procurement keeps the buying orderly. The billing check is a different job — here's how it lands by trade.
General Contractors
Self-perform work means buying like a sub while billing like a GC. Procurement keeps the buys orderly; CheckIT checks what suppliers actually billed against what was quoted — before it lands in job cost.
CheckIT for Residential & Light-Commercial General ContractorsElectrical
Wire and gear reprice between the RFQ and the delivery. However clean the PO trail is, the invoice line is what hits your margin — CheckIT checks it against the quote, in dollars.
CheckIT for Electrical ContractorsCivil
Aggregate, pipe, and trucking invoices pile up fast on civil work, with unit prices and quantities that drift past the quote. CheckIT checks every line and totals the difference across the job.
CheckIT for Heavy Civil & Infrastructure Contractors
The cost of not verifying
Across the trades, 39% of construction invoices contain an error.
As a share of invoice value — quietly compounding across every job.
Minutes per document instead of the better part of an hour.
Extrapolated from early-customer data. Results vary by invoice volume and contract complexity.
CheckIT vs. Field Materials AI — common questions
No — CheckIT is not a procurement workflow tool and doesn't replace Field Materials. Field Materials runs RFQs, POs, delivery capture, inventory, and prefab; CheckIT verifies invoice lines against the contract baseline regardless of how the invoice arrived. They sit at different stages of the same ledger and many contractors will benefit from running both.
No. CheckIT works on any invoice PDF and any contract, quote, or rate-sheet PDF — no ERP, no procurement workflow, no field-team rollout, and no implementation project. Upload two documents and CheckIT returns a line-by-line, severity-ranked verification report in minutes. That posture is the structural opposite of Field Materials' 3-way match, which depends on FM-generated POs and bi-directional ERP write-back.
Field Materials' 3-way match checks an invoice against the PO and the delivery slip — both of which had to be created inside Field Materials. CheckIT compares each invoice line against the underlying contract baseline (or rate sheet, or 12-month historical). If the original PO had the wrong price or quantity, FM's match confirms the wrong number; CheckIT catches it. Different question, different answer, different layer of the ledger.
Yes — and many contractors will. Field Materials handles procurement: RFQs, POs, delivery capture, AP routing. CheckIT handles verification: every invoice line against the contract baseline, including invoices from subs, T&M tickets, and vendors that never touched a procurement workflow. The two are complementary: FM controls the document chain, CheckIT defends the dollar amounts.
CheckIT is priced per document or per engagement with no ERP integration, no implementation fee, and no field-team rollout — the first invoice you upload delivers ROI. Field Materials is quote-based and demo-gated, with no published pricing; value lands only after the workflow is adopted and ERP write-back is configured. The pricing models reflect the architectural difference: CheckIT charges for verification output; Field Materials charges for workflow access.
Compare CheckIT to other tools
See CheckIT Invoice run against one of your invoices.
Send one job's invoices and the contract or rate sheet they price against — we'll report the line-by-line dollar delta inside 48 hours. Or run it yourself in the app and have it in minutes.
No ERP integration required. No procurement workflow. No sales call to start. Free audit: one job, 48 hours, no credit card. Plans from $455/mo.