INVOICE PROCESSING
Build a Three-Way Match Exception Queue in Airtable
On a schedule, joins purchase orders, goods receipts, and invoices from Postgres, flags any line where quantity or amount disagrees across the three.
How it runs
The automated pipeline, trigger to output.
- TriggerNightly schedule fires
- ActionQuery joined PO + receipt + invoice linesPostgres
- LogicCompare qty and price across all three
- LogicDrop clean matches, keep exceptions
- OutputUpsert exceptions into Airtable review queueAirtable
What it does
Reconciles every open invoice against its purchase order and the warehouse receipt, then surfaces only the lines that fail the three-way match into a single Airtable queue your AP team works from. Clean matches are auto-cleared and never bother a human.
When to use it
Use this when invoices, POs, and receipts all live in your ERP/Postgres but AP still eyeballs matches in spreadsheets. It replaces the manual reconcile with a nightly job that only escalates true exceptions.
How it works
- 1A nightly schedule fires the run.
- 2Postgres returns each invoice line joined to its PO line and the matching receipt line by PO number and SKU.
- 3A logic step compares ordered vs received vs billed quantity and PO unit price vs invoiced price, classifying each line as matched, price variance, quantity variance, or missing receipt.
- 4Matched lines are dropped; only exceptions continue.
- 5Each exception is upserted into the Airtable AP Review table with the variance type, the three source values, and the dollar delta.
- 6A summary count is written back so the queue shows how many opened today.
Set it up
What you configure once, before turning it on.
- 1Connect PostgresAny Postgres URL — query, write, migrate.
- 2Connect AirtableBases, tables, views, automations.
- 3Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 4Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 5Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
More Invoice Processing workflows
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Gate invoice approvals on a duplicate cross-check
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Catch duplicate invoices as they hit your AP inbox
Watches your accounts-payable Gmail inbox for incoming invoice emails, fingerprints each one, and routes likely duplicates to a review label instead of into the approval queue.
Block duplicate Stripe payouts before they send
When a new vendor invoice is queued for payment in Stripe, cross-check it against your paid-invoice history in Postgres and halt any payout that matches an already-paid invoice.
Run it inside a business
This workflow drops into a full company template. Import the org, and this is one of the playbooks its agents run.

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