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Invoice Processing Automation

Automatically extracts invoice data, validates it against rules, flags exceptions, and logs everything into a clean AP ledger — so you can process invoices faster with fewer errors.

Impact

AutoOCR + Extraction
ExceptionFlagging
APLedger in Sheets

The Problem

Finance teams still process invoices manually—downloading PDFs, copying fields into spreadsheets/ERP, and chasing missing PO/vendor details. This slows down approvals and increases the chance of costly errors.

  • Manual copy-paste from PDF invoices into systems
  • Missing PO / incorrect GST / mismatched totals cause back-and-forth
  • Duplicate invoices slip through without a consistent check
  • No clear audit trail of what was received, approved, and paid

Built For

Finance & AP Teams

Faster processing with fewer manual steps.

Ops Managers

Visibility into pending invoices and blockers.

Founders

Cleaner cashflow tracking and fewer payment mistakes.

Parsed Invoice → AP Ledger Row

Invoice Details (Extracted)

Vendor:
Acme Supplies Pvt Ltd
Invoice #:
ACM-INV-10492
Invoice Date:
12 Feb 2026
Due Date:
12 Mar 2026
Amount:
₹48,750
GSTIN:
29XXXXXX1234X1Z5

Validation

PO Match:"Missing" (Flagged)
Duplicate Check:"No duplicate found"

Action

Status:"Needs Review"
[Open AP Ledger Row →]

Before vs After

The Old Way

MANUAL
  • Invoices downloaded and entered manually
  • Frequent data-entry errors (dates, totals, GST)
  • Missing PO/vendor info discovered late
  • Duplicate invoices hard to catch
  • Status updates scattered across email/WhatsApp

The Automated Way

AUTOMATED
  • Invoice fields extracted automatically
  • Rule-based validations + exception flags
  • Clean AP ledger with consistent columns
  • Duplicate detection built into workflow
  • Clear status tracking: Received → Review → Approved → Paid

How the Workflow Runs

From raw input to client-ready execution

Invoice Ingestion
OCR + Field Extraction
Validation & Exception Rules
Ledger + Alerts

Tech Stack

n8nGoogle Drive/GmailOCRGoogle SheetsSlack/Email

What Gets Generated

Every run produces two ready-to-use artifacts

Google Sheets (AP Ledger)

Every run produces an AP ledger entry + an exception trail

TimestampVendor NameInvoice NumberInvoice DateDue DateCurrencySubtotalTaxTotal AmountPO NumberPayment TermsCategoryDuplicate StatusValidation FlagsAssigned ToApproval StatusSource Link (PDF)Notes

Exception Alert (Slack/Email)

Every run produces an AP ledger entry + an exception trail

1.Vendor, Invoice Number, Total Amount2.Flag Reason, Suggested Fix3.Link to PDF, Link to Ledger Row