AP three-way match — Etch Docs

Accounts payable three-way match on INV-000001: load invoice, purchase order, and receiving records; compare lines; emit match verdict. Full monologue below.

Tool calls: 6
Total tokens: 1,112
Reasoning tokens: 448
Tool output tokens: 664
Wall time: 118 ms
Throughput: 9,451 tok/s

AP review request received. I'll run a supplier invoice three-way match — purchase order, receiving records, and supplier invoice — then recommend approve, hold, or dispute with draft communications for finance.

I'll read the AP request and pull out invoice numbers, UUIDs, or PO references — that tells me whether we're reviewing a specific invoice or the pending-match queue.

Tool call parse_inquiry

{
  "inquiry_text": "Run a three-way match on supplier invoice INV-000001"
}

Inquiry parsed. Found 0 invoice id(s), 1 invoice number(s). Primary target looks like `INV-000001`.

Fetching the supplier invoice record (`INV-000001`) including line items, match status, and any GLC-precomputed discrepancies.

Tool call fetch_supplier_invoice

{
  "invoice_number": "INV-000001"
}

Invoice `INV-000001` loaded — status `disputed`, match `disputed`, total $225.00, linked PO `4e24c0b2...`.

Target invoice is `INV-000001` (disputed). Next I'll pull the linked PO and receiving records.

The invoice references PO `4e24c0b2...`. I need the PO line items and authorized quantities as the first leg of the three-way match.

Tool call fetch_purchase_order

{
  "purchase_order_id": "4e24c0b2-29a9-4e24-a4ea-1693967830cd"
}

PO `PO-000001` retrieved — status `partially_received`, 1 line(s), total $225.00.

Second leg of the match: pulling receiving records for PO `4e24c0b2...`. Receipt quantities are what we actually accepted into inventory.

Tool call fetch_po_receipts

{
  "purchase_order_id": "4e24c0b2-29a9-4e24-a4ea-1693967830cd"
}

Found 1 receipt(s) on this PO. Aggregate received quantity by SKU is ready for comparison.

Pulling supplier profile `febbec24...` so any hold note or dispute email can name the vendor and use the correct AP contact.

Tool call fetch_supplier

{
  "supplier_id": "febbec24-756a-4987-8754-8772dbb965e0"
}

Supplier is Acme Widget Supply Co. ([email protected]).

All three documents are in hand. Comparing line-by-line quantities and unit costs.

Running the three-way comparison for invoice `INV-000001` — PO `PO-000001` vs 1 receipt(s) vs 1 invoice line(s).

Tool call compare_three_way

{
  "purchase_order": {
    "id": "4e24c0b2-29a9-4e24-a4ea-1693967830cd",
    "po_number": "PO-000001",
    "supplier_id": "febbec24-756a-4987-8754-8772dbb965e0",
    "status": "partially_received",
    "total_amount": "225.00",
    "expected_delivery_date": "2026-06-30",
    "notes": "Simulated acknowledgement (confirmed)\nShipped SIM-196237\nShipped BACKFILL-PO-000001; receipt RCV-000001",
    "created_at": "2026-06-25T16:08:08.648544Z",
    "updated_at": "2026-06-27T17:06:31.802048Z",
    "line_items": [
      {
        "id": "d6998f51-6982-4a35-b53a-b92058827669",
        "purchase_order_id": "4e24c0b2-29a9-4e24-a4ea-1693967830cd",
        "sku": "WDG-001-S",
        "product_name": "Widget Small",
        "quantity": 50,
        "unit_cost": "4.50",
        "line_total": "225.00"
      }
    ]
  },
  "receipts": [
    {
      "id": "98ce7c8c-a670-415b-8c97-22131bf4aad3",
      "purchase_order_id": "4e24c0b2-29a9-4e24-a4ea-1693967830cd",
      "receipt_number": "RCV-000001",
      "received_at": "2026-06-25T17:06:31.785201Z",
      "status": "partial",
      "line_items": [
        {
          "sku": "WDG-001-S",
          "quantity_ordered": 50,
          "quantity_received": 45,
          "unit_cost": "4.50"
        }
      ]
    }
  ],
  "invoice": {
    "id": "ae266f26-3e01-4d0f-8519-1ce0132051ca",
    "invoice_number": "INV-000001",
    "supplier_id": "febbec24-756a-4987-8754-8772dbb965e0",
    "purchase_order_id": "4e24c0b2-29a9-4e24-a4ea-1693967830cd",
    "status": "disputed",
    "total_amount": "225.00",
    "invoice_date": "2026-06-27",
    "due_date": "2026-07-27",
    "line_items": [
      {
        "sku": "WDG-001-S",
        "quantity": 50,
        "unit_cost": "4.50",
        "line_total": "225.00"
      }
    ],
    "match_status": "disputed",
    "discrepancies": [
      {
        "type": "quantity_mismatch",
        "sku": "WDG-001-S",
        "po_quantity": 50,
        "received_quantity": 45,
        "invoiced_quantity": 50,
        "notes": "PO ordered 50; received 45; Supplier invoiced for 50; only 45 received"
      }
    ],
    "match_notes": "qty mismatch"
  }
}

Comparison complete. Recommended action: `hold`. 1 discrepancy(ies), all lines matched=False.

Three-way match recommends `hold`. Drafting AP hold note and supplier dispute email.

Investigation complete for `INV-000001`. Recommended action: `hold`.

Expert output

AP hold — supplier invoice INV-000001
Supplier: Acme Widget Supply Co.
Linked PO: PO-000001 (partially_received)
Invoice total: $225.00
Recommended action: HOLD

Supplier invoiced for more units than were received; hold payment pending AP review or supplier credit.

Discrepancies:
- [quantity_mismatch] WDG-001-S: PO ordered 50; received 45; supplier invoiced 50.

Next steps: verify receiving records, confirm whether a partial shipment is expected, and release or dispute the invoice accordingly.