How do I handle disputed vendor invoices in construction AP?

Key takeaways

• Vergo runs AP invoices, card spend, and reimbursements through one coding model with optional approval routing by GL account, amount, or project, streamlining dispute resolution across all payment types.
• Field supervisors should review vendor invoices against actual work completed and flag discrepancies before the invoice reaches AP.
• Disputed invoices need a standardized workflow with defined owners, escalation paths, and clear documentation requirements at each stage.
• AP teams should work directly with field supervisors and vendors to resolve disputes, recording the resolution in a central system accessible to all parties.
• Once disputes are resolved and approvals obtained, invoices can be processed for payment and synced into the construction ERP.
• Tracking historical disputes helps identify recurring issues and opportunities to improve vendor relationships or internal processes.

Why construction invoice disputes happen

Disputed vendor invoices are a major pain point for construction AP teams. Field supervisors often lack visibility into the work completed, leading to disagreements with vendors over the invoice amounts. This forces AP to chase down approvals and documentation, stalling the entire payment pipeline. Common causes include lack of field-office visibility into work progress, unclear processes for verifying and approving disputed invoices, slow manual handoffs between field, accounting, and vendors, and difficulty tracking the status of disputed items. These issues compound when multiple projects run simultaneously and different field teams follow different approval practices.

The recommended workflow for disputed invoices

Field supervisors should review each vendor invoice against the work completed on site and flag any discrepancies. Disputed invoices are then routed through a standardized approval workflow, with clear steps and owners defined at each stage. AP works directly with the field supervisor and vendor to resolve the dispute, documenting the resolution in writing with supporting evidence such as photos, signed change orders, or delivery receipts. Once approved, the invoice is processed for payment through the construction ERP. All disputed invoices and their resolution are tracked in a central system so project managers, controllers, and field teams can see the status of any item without email chains or phone calls.

A practical example

A concrete subcontractor submits an invoice for 120 cubic yards delivered to a commercial site, but the field superintendent's records show only 95 yards were poured that week. The superintendent flags the discrepancy when reviewing the invoice. AP contacts the vendor, who provides delivery tickets showing two separate pours. The superintendent verifies the second delivery against job site logs and photos, confirms the total, and approves the invoice. The resolution is documented in the central tracking system with the delivery tickets attached, and the invoice is released for payment. Vergo's inference-based coding proposes the GL account and project assignment from your own accounting history, so reviewers can confirm the coding in seconds even during dispute resolution. This process prevents payment errors while maintaining the vendor relationship through transparent communication.

Best practices for construction teams

Require field supervisors to review and approve all vendor invoices before sending to AP, ensuring they have access to project records and delivery documentation. Establish clear policies for handling disputed items, with defined escalation paths when field teams and vendors cannot resolve discrepancies directly. Integrate your construction ERP with AP systems to streamline the workflow and eliminate manual data entry. Provide mobile access so field teams can review and approve invoices on the go without returning to the office. Train your AP and field teams on the dispute resolution process to ensure consistent enforcement across all projects. Analyze historical disputed invoices to identify common issues and areas for process improvement, such as recurring vendors with documentation problems or specific cost codes that generate frequent disputes.

How Vergo handles this

Vergo runs card spend, employee reimbursements, and AP invoices through one coding model, so all three follow the same coding logic, the same review process, and one reconciliation. 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. Every coding shows why it was chosen, so a reviewer confirms in seconds instead of re-coding by hand. Vergo proposes the coding by inference from your own accounting structure and history, so new vendors are coded on first sight without building rule libraries or maintaining keyword lists. Vergo integrates with every ERP and accounting software, syncing transactions once they clear.

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