I need a complete n8n workflow that automatically matches each purchase my company makes with the corresponding payment so our quarterly tax reporting is painless. All data will live inside n8n; I simply want the flow to pull every new invoice I add, reconcile it against its payment record, then summarise what is deductible and ready for submission. Here is what I expect the workflow to do from end to end: • Watch for a new or updated invoice record. • Locate the matching payment entry. • Flag any inconsistencies (amount, date, missing fields) and send me a Slack or email alert. • Aggregate the reconciled data into a single tax-ready report (CSV or Google Sheet is fine). • Trigger a confirmation once the report is generated so I can file it immediately. Everything needs to be built with standard n8n nodes—no custom code unless absolutely necessary—so I can maintain it myself afterwards. A short hand-off video or annotated screenshots explaining each node will be part of the final delivery. If you have experience setting up similar finance or tax-centric flows in n8n, let’s talk; I’m ready to get this running right away.