invoice-po-reconciliation

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name: invoice-po-reconciliation description: Reconciles one or more user-selected invoice files against matching purchase orders in the Purchase Order library. Compares totals, flags discrepancies, writes reconciliation status back to invoice metadata, and returns a formatted summary table. Trigger phrases: po reconciliation, invoice reconciliation, invoice to po reconciliation, reconcile invoice, reconcile po, match invoice to po, invoice po match, po match, check invoice against po.

Invoice vs. Purchase Order Reconciliation

Purpose

Reconcile one or more user-selected invoice files against their corresponding purchase orders (POs). Determine compliance by comparing totals, write results back to invoice metadata, and return a clear summary.

Trigger Phrases

Activate this skill when the user says any of the following (or close variations):

• "po reconciliation"
• "invoice reconciliation"
• "reconcile invoice"
• "invoice to po reconciliation"
• "reconcile po"
• "match invoice to po"
• "invoice po match"
• "check invoice against po"
• "po match"
• "compare invoice to po"

Prerequisites

• The user must have one or more invoice files selected in a document library.
• If no files are selected, ask the user to select the invoice file(s) they want to reconcile.

Steps (repeat for each selected invoice)

Step 1 — Read Invoice Metadata

Use cat_file or list_items (with field projection) to read the selected invoice file's metadata columns. Look for:

• Invoice Number
• Invoice Total (or Amount, Total, Invoice Amount — adapt to actual column name)
• PO Number (or Purchase Order Number, Referenced PO — adapt to actual column name)

If the library has metadata columns populated, extract the values directly.

If metadata columns are missing or empty, read the file content with cat_file and extract Invoice Number, Invoice Total, and PO Number from the document body.

Step 2 — Find the Matching Purchase Order

Search the Purchase Order library (also try "Purchase Orders" or "PO" if not found) for a record whose PO Number column matches the PO Number extracted from the invoice.

• Primary method: Use list_items with a filter on the PO Number column.
• Fallback method: If the library doesn't have a clear PO Number column or the filter returns no results, use find_items or semantic_search to locate the PO by PO number.

If no matching PO is found, report the invoice as Unable to Reconcile — No matching PO found and move to the next invoice.

Step 3 — Extract PO Details

From the matching PO record, extract:

• PO Number
• PO Total (or PO Amount, Total, Order Total — adapt to actual column name)

If PO Total is not available in metadata, read the PO file content with cat_file to extract the total.

Step 4 — Reconcile

Perform two checks:

1. PO Number Match: Confirm the PO Number from the invoice exactly matches the PO Number on the PO record. Any mismatch (e.g., trailing characters, prefix differences) = Discrepancy.

2. Total Comparison:

   • If Invoice Total > PO Total → Non Compliant (overage = Invoice Total − PO Total)
   • If Invoice Total ≤ PO Total → Compliant (remaining budget = PO Total − Invoice Total)

Step 5 — Write Back to Invoice Metadata

Use update_list_items_v2 to write the following columns on the invoice item. If the columns don't exist yet, note that to the user and skip the write-back.

Column	Value
Reconciliation Status	Compliant or Non Compliant
Reconciliation Details	Plain-English summary, e.g., "Invoice #1042 ($4,800.00) matched to PO #PO-1042 ($5,000.00). Invoice is within PO budget. Remaining: $200.00." or "Invoice #1043 ($6,200.00) exceeds PO #PO-1043 ($5,000.00) by $1,200.00."

Step 6 — Return Summary to User

After processing all invoices, return a single formatted Markdown table:

Invoice #	Invoice Total	PO #	PO Total	Status	Details
1042	$4,800.00	PO-1042	$5,000.00	✅ Compliant	Remaining budget: $200.00
1043	$6,200.00	PO-1043	$5,000.00	⚠️ Non Compliant	Overage: $1,200.00
1044	$3,500.00	PO-9999	—	❌ No Match	No matching PO found

Use these status indicators:

• ✅ Invoice is Compliant — Invoice total is at or below PO total. Show remaining budget.
• ⚠️ Discrepancy Found — Invoice total exceeds PO total. Show overage amount.
• ❌ Unable to Reconcile — No matching PO found or PO number mismatch.

Example

User: "Reconcile this invoice against its PO" (User has selected: Invoice-1042.pdf)

Agent response after processing:

I read Invoice-1042.pdf and found Invoice #1042 for $4,800.00 referencing PO-1042. I located PO-1042 in the Purchase Order library with a total of $5,000.00.

Invoice #	Invoice Total	PO #	PO Total	Status	Details
1042	$4,800.00	PO-1042	$5,000.00	✅ Compliant	Remaining budget: $200.00

I updated the invoice metadata with Reconciliation Status = Compliant and the reconciliation details.

Constraints

• Never fabricate invoice or PO data. All values must come from actual file content or metadata.
• If a column name doesn't match exactly (e.g., "Amount" vs "Invoice Total"), adapt by inspecting the list schema with get_list_schema first.
• If the Purchase Order library can't be found on the site, ask the user which library contains the POs.
• If write-back columns (Reconciliation Status, Reconciliation Details) don't exist on the invoice library, inform the user and offer to create them.
• Format all currency values with two decimal places and a dollar sign.
• Process invoices in the order they were selected.