Best Seller Pegasus Authorised Developer

AutoInvoicing — Automated Invoice Processing for Pegasus Opera 3

AutoInvoicing reads your supplier invoices and posts them directly to your Opera 3 purchase ledger. No manual typing. No errors. No chasing. Compatible with all versions of Opera 3.

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Best-selling AP automation for Pegasus Opera 3The most widely used invoice automation add-on in the Pegasus ecosystem, trusted by finance teams across the UK.

Sold by Pegasus resellers across the UKAvailable directly from Diskel and through authorised Pegasus Software resellers nationwide.

Compatible with all versions of Opera 3Works with Opera 3, Opera 3 SQL and Opera 3 SE — no upgrade required.

Purpose-built for Opera 3 — not a generic toolWritten specifically for Opera 3 by a Pegasus Authorised Developer. Not a third-party integration bolted on.

Sound familiar?
Keying invoices manually into Opera 3 Errors and duplicate payments Chasing approvals by email Missing settlement discounts No visibility of invoice status Stacks of paper invoices to file
Key features

Everything AutoInvoicing does for your Opera 3 team

AutoInvoicing covers the full accounts payable journey from the moment an invoice arrives to the moment it is posted in Opera 3 and ready for payment.

Invoice capture

  • Email invoices to a unique address for automatic processing
  • Drag and drop via the web portal
  • Fast, accurate OCR — detail and summary capture
  • Multi-page invoices treated as a single scan
  • Credit notes handled as well as invoices
  • Bank and VAT detail validation

Opera 3 integration

  • Purchase Ledger and PIR module integration
  • PO and GRN matching before posting
  • Advanced Nominal — Account, Cost Centre, Project and Department
  • Job Costing integration
  • Foreign currency capabilities
  • Invoice image stored against the Opera 3 transaction

Workflow and control

  • Design and assign approval workflows
  • PIR approval process integration using Assigned To
  • Full audit trail on every invoice
  • Scalable monthly invoice packages
  • Customisable to fit your existing processes
  • Minimal training required — simple user interface
Supported invoice formats

AutoInvoicing accepts the following formats — no reformatting required by your suppliers.

PDF HTML XLS / XLSX PNG JPEG Scanned paper Email attachment Credit notes Foreign currency
How it works

From invoice receipt to Opera 3 posting — in detail

1

Invoice arrives

Your supplier sends an invoice by email, or you upload it via the secure web portal. AutoInvoicing accepts any format — PDF, HTML, scanned paper, photo. Multi-page documents are treated as a single invoice automatically.

2

OCR extracts the data

The OCR engine reads the invoice, extracting supplier name, invoice number, date, VAT, line items and amounts. Detail or summary capture — your choice. Bank details and VAT numbers are validated automatically before the next step.

3

Matching and validation

AutoInvoicing checks the invoice against outstanding Purchase Orders and Goods Received Notes in Opera 3. Discrepancies are flagged before anything is posted, preventing incorrect entries from reaching your ledger.

4

Approval workflow (optional)

If you use AutoApprovals, the invoice is automatically assigned to the relevant authoriser. They receive a notification and can approve or reject from any device — no chasing, no paper, no email threads. Every action is logged.

5

Posted to Opera 3

Once validated and approved, the invoice is posted directly to your Opera 3 Purchase Ledger or PIR module — with the invoice image stored against the transaction for instant retrieval and audit purposes.

Opera 3 modules supported

  • Purchase Ledger
  • Purchase Invoice Register (PIR)
  • Purchase Orders and GRN matching
  • Job Costing
  • Advanced Nominal — Account, Cost Centre, Project, Department

Works with all Opera 3 versions

  • Pegasus Opera 3
  • Opera 3 SQL
  • Opera 3 SQL SE

Compliance and security

  • HMRC digital recordkeeping supported
  • Full audit trail on every invoice and action
  • GDPR-compliant document storage
  • Supplier bank detail validation
Full technical guide to how AutoInvoicing works
See it in action

Watch AutoInvoicing process a real supplier invoice

See how AutoInvoicing captures invoice data, matches it against a purchase order and posts it into Pegasus Opera 3 — in under a minute, with no manual input.

Watch on YouTube
Frequently asked questions

AutoInvoicing for Pegasus Opera 3 — questions answered

The most common questions we receive about automating invoice processing in Pegasus Opera 3.

Automated invoicing for Pegasus Opera 3 is a tool that digitises and streamlines how invoices are received, approved and entered. It eliminates manual data entry, reduces errors and saves time across your accounts payable process. Find out how AutoInvoicing works in detail.
AutoInvoicing posts directly into the Pegasus Opera 3 Purchase Ledger and PIR modules. It also supports matching against Purchase Orders and Goods Received Notes, and integrates with the Job Costing module and Advanced Nominal, including Account, Cost Centre, Project and Department.
You can either email invoices directly to a dedicated inbox or drag and drop them into the secure web portal. AutoInvoicing extracts the key data and posts it into Opera 3 automatically — no manual steps required.
AutoInvoicing handles PDFs, HTML, XLS, scanned documents and photos. It also supports multi-page invoices, credit notes and foreign currency invoices — so however invoices arrive from your suppliers, the system can process them.
Yes. AutoInvoicing can validate supplier bank details and VAT numbers before posting, helping you stay compliant and avoid errors caused by incorrect or outdated supplier information.
AutoInvoicing includes basic approval assignment via the PIR Assigned To field. For multi-level, rules-based approval workflows with Microsoft Outlook, Teams and SharePoint integration, AutoApprovals is the dedicated companion product — it adds full approval chains with automatic notifications, authorisation limits and a complete audit trail.
Yes. AutoInvoicing is built with UK businesses in mind, supporting GDPR, HMRC digital recordkeeping and audit-ready workflows. Every invoice is archived securely within Opera 3 for full traceability.
Yes. AutoInvoicing is used by UK businesses of all sizes running Pegasus Opera 3, from small finance teams processing a few hundred invoices a month to larger operations handling high volumes across multiple entities. Scalable monthly invoice packages mean you only pay for what you need.
The automation suite

AutoInvoicing works even better with these

Each product works independently or together as a complete Opera 3 automation suite.

AutoFiling

Archives every invoice and business document inside Opera 3 with full SharePoint integration. Find anything instantly from anywhere. Includes a migration tool for Opera 3 to Opera 3 SQL.

Learn about AutoFiling

AutoApprovals

Routes invoices and purchase orders through your approval chain automatically, with Microsoft Outlook, Teams and SharePoint integration. Approve from anywhere with a complete audit trail in Opera 3.

Learn about AutoApprovals