INVOICE PROCESSING
Duplicate and Anomaly Guard Before Discount Approval
Before any early-payment invoice reaches approval, this workflow checks it against the AP register for duplicates and anomalous amounts.
How it runs
The automated pipeline, trigger to output.
- TriggerDiscount-eligible invoice in AirtableAirtable
- ActionSearch register for duplicates and similar amountsAirtable
- ActionScore amount and pattern anomalies with OpenAIOpenAI
- LogicRoute flagged to hold, clean forward
- ActionRaise PagerDuty alert for flagged invoicesPagerDuty
- OutputMark validated and release to approval queueAirtable
What it does
Rushing to hit a discount deadline is exactly when duplicate or inflated invoices slip through. This workflow adds a guardrail: each discount-eligible invoice is screened for duplicate invoice numbers, repeated amounts to the same vendor, and out-of-pattern totals before it is allowed into the pay-now approval queue.
When to use it
Use it when speed-to-discount pressure raises the risk of paying a bad invoice twice or overpaying. It sits between invoice detection and approval, so only validated invoices get fast-tracked for early payment.
How it works
- 1A discount-eligible invoice triggers the flow from the Airtable register.
- 2The flow searches Airtable history for matching invoice numbers and similar amounts to the same vendor.
- 3An OpenAI step scores the invoice for amount and pattern anomalies versus that vendor's norms.
- 4A logic gate routes flagged invoices to a hold state and clean invoices forward.
- 5Flagged invoices raise a PagerDuty alert for AP review with the reason.
- 6Clean invoices are marked validated in Airtable and released to the approval queue.
Set it up
What you configure once, before turning it on.
- 1Connect AirtableBases, tables, views, automations.
- 2Connect OpenAIModels, embeddings, files.
- 3Connect PagerDutyIncidents, on-call, escalations.
- 4Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 5Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 6Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
More Invoice Processing workflows
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Agent that codes Front invoices to GL accounts and drafts a bill
An agent reads each Front vendor invoice, assigns GL account codes per line item using your chart of accounts and past coding history.
Detect duplicate Front invoices and archive originals to S3
Parses each Front vendor invoice, checks it against a history table for duplicates, archives the source PDF to S3 with a normalized key, and alerts AP when a duplicate is caught.
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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