
Autonomous Multi-Agent Procurement & Invoice Reconciliation Engine
A production demonstration of four autonomous LangGraph agents that extract unstructured PDF line items, verify quantities in SAP ERP schemas, isolate discrepancy variances, and generate GL accounting ledger entries with human review only on high-value outliers.
Supply chain enterprises process complex, unstructured supplier invoices each month. Manual accounts payable workflows require staff to cross-reference document line items against purchase order tables, creating processing bottlenecks and error vulnerabilities.
OXELVO engineered a deterministic multi-agent state machine. Agent 1 parses and normalizes OCR layout data. Agent 2 checks purchase orders in the ERP. Agent 3 evaluates price and quantity variance thresholds. Agent 4 prepares atomic ledger commits while routing variances to human reviewers via an approval portal.





