Checking acceptance certificates and invoices against the contract

A subcontractor's completion certificate from Buildxact and an invoice are signed off when the project manager remembers the contract and the CostX estimate. AI reads the certificate, compares quantities, rates, parts already paid and retention with the contract and the Procore budget, and flags discrepancies, while a person approves before import into SAP Business One.

Built for ISO 27001NIS2 DORA

Checking acceptance certificates and invoices against the contract
  • Import into accounting and support

A discrepancy spotted before the signature, not in the annual stocktake in SAP Business One

  • Before signing discrepancies are flagged while the certificate is unsigned
  • Cumulative quantities checked against earlier certificates and the CostX estimate
  • Retention applied under the contract every time
  • The accountant approves the batch before posting in SAP Business One or NetSuite

At the end of the month, the general contractor receives a pile of subcontractor completion certificates with invoices, usually PDFs from Buildxact or Excel. The project manager has to check that the quantities in the certificate match the work actually done and the CostX estimate limits, that the rates are those in the contract, that no work is included that was already paid under an earlier certificate, that the retention required by the contract has been applied, and that the invoice total matches the certificate. The manager does this from memory and in Excel, often in a hurry because the subcontractor is waiting for payment, and then the accountant keys the invoice into SAP Business One. Errors come to light months later, when the cumulative value of the certificates exceeds the contract or the retention was never applied.

The solution accepts certificates and invoices from email or SharePoint, reads them down to the line level and compares them with the contract, the CostX estimate and the Procore project budget, if you use it: for every line it checks the rate, the cumulative quantity including earlier certificates, the estimate limit, the retention percentage and whether the invoice matches the certificate. Discrepancies are presented to the project manager in a list with the certificate line, the contract clause and the difference, and the manager marks whether to accept the explanation or return the certificate to the subcontractor for correction. Clean documents are prepared for import into SAP Business One or NetSuite with the project and cost code assigned, and the accountant approves the batch, and only then does the entry appear in the books and the costs are updated in Procore. For document recognition we use Azure AI Document Intelligence in an EU region or AI Builder in your Microsoft 365 tenant, we build the flows with Power Automate, and we integrate with Buildxact, Procore and SAP Business One or NetSuite through the API, file export or an email flow, depending on the version. Documents stay in SharePoint and the accounting system and are not used for model training.

How it works

Four steps from input to a record in your system, with human approval wherever there is risk.

Receiving certificates and invoices

The subcontractor sends a certificate from Buildxact or Excel and an invoice by email, or uploads them to SharePoint. The documents are read down to the line level (item, quantity, unit, rate, amount) and linked to the project and the subcontractor's contract by company details and contract number.

What you get

Reading certificates down to line level
Reading certificates down to line level

Recognition of subcontractor certificates from Buildxact, Excel or scanned PDFs, and of invoices, down to line level, linked to the project and the contract.

Register of contracts and estimates
Register of contracts and estimates

An organised structure of contracts, rates, CostX estimate limits and retention in SharePoint or Procore, against which every certificate is compared, with tracking of amendment versions.

Discrepancy view for the project manager
Discrepancy view for the project manager

A list with the certificate line, the contract clause, the estimate limit, the difference and the option to mark a decision, which is recorded in a log.

Import into accounting and support
Import into accounting and support

Batch approval by the accountant and import into SAP Business One or NetSuite through an import file or the API, cost updates in Procore, monitoring of the first months and refinement of the rules.

What we build it with

Document recognition + Power Automate + Buildxact certificates + CostX estimate and Procore budget for matching + SAP Business One or NetSuite import. We choose the integration method with each system after checking your versions. Read more about this service and its limits on the service page.

Frequently asked questions

Does the solution reject a subcontractor's certificate on its own?

No. It flags a discrepancy and shows what it does not match, whether the contract, the CostX estimate or an earlier certificate, while the decision to accept, negotiate or return it for correction is made by the project manager. An entry reaches SAP Business One or NetSuite only after the accountant approves it, so neither a payment nor a cost entry happens without a person.

Does it work with Buildxact, Procore and SAP Business One?

Yes. We usually take Buildxact certificates as a PDF or Excel export, the Procore budget and costs through the API or an export, and we import into SAP Business One or NetSuite through an import file or the API, depending on the version. We choose the integration method after a check at the start of implementation. If your ERP runs on our ERP hosting, the integration is simpler.

Can we also check our own certificates to the client?

Yes, the same logic works in reverse: your certificate, prepared in Buildxact or CostX, is checked against the construction contract and the estimate before it is sent to the client, so the client does not return it because of a rate or cumulative quantity error. This is often the second stage after subcontractor certificates.

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Expertise confirmed by certifications

This service is delivered by specialists with valid international certifications. Their expertise is confirmed by independent organisations, not by us.

All certifications
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    AISP PECB

    Artificial Intelligence Security Professional

    AI systems are deployed with protection against data leakage and model abuse.

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    AAISM ISACA

    ISACA Advanced in AI Security Management

    The AI security programme and its controls are managed following the ISACA methodology.

  • AAIR badge
    AAIR ISACA

    ISACA Advanced in AI Risk

    AI risks are identified and managed like any other IT risk.

Let's discuss: matching certificates and invoices to contracts

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