--- title: "SAP AP Automation: AI 3-Way Invoice Matching" description: "AP automation for SAP: invoices captured from email and PDF, matched 3-way against PO and goods receipt, posted automatically. Exceptions explained." canonical: https://www.gosourced.ai/en/sap-ap-automation locale: en last_updated: 2026-07-12 doc_version: 1 --- # SAP AP Automation: AI 3-Way Invoice Matching > AP automation for SAP: invoices captured from email and PDF, matched 3-way against PO and goods receipt, posted automatically. Exceptions explained. ## AP automation for SAP, run by AI AP automation for SAP means supplier invoices are captured from email, PDF or portal, matched 3-way against the purchase order and goods receipt in SAP, and posted as supplier invoices automatically via OData APIs. Exceptions reach your team with the reason explained; everything else flows. Trust signals: 9 ERP integrations · Line-level 3-way match · EN / ES / PT support · 2-3 week deployment ## Key stats - **3-way** — match on every invoice: PO + receipt + invoice, line by line - **24/7** — capture from email, PDF and supplier portal, no templates - **2-3 weeks** — to go live, no migration ## Problem & solution **Problem:** SAP's Logistics Invoice Verification is genuinely strong at the moment of posting: MIRO checks the invoice against the PO and goods receipt and blocks it on variance. The problem is everything around that moment. Invoices arrive as PDFs in a shared AP inbox and someone keys them into MIRO or feeds an OCR add-on like OpenText VIM, a six-figure implementation on its own. And when MIRO blocks an invoice, resolving the block is manual detective work: was the price renegotiated? Did the warehouse under-receive? Is the supplier billing freight that wasn't on the PO? That resolution loop, not the match itself, is where AP teams working in SAP lose their days. **Solution:** Sourced automates the whole loop on top of SAP. Invoices arrive by email, PDF upload or the supplier portal and are extracted at line level without templates. Each line is matched against the purchase order and the goods receipt read from SAP via OData APIs: price, quantity, taxes, freight. Clean invoices post automatically as supplier invoices. Mismatches don't just get flagged: Sourced explains the cause (price variance vs. the PO, quantity over-billed vs. the receipt, probable duplicate, missing receipt) and routes each one to the right person, or back to the supplier for a corrected invoice, automatically. Because Sourced also runs the upstream cycle (RFQ, PO, delivery tracking), the matching data is native, not reconstructed. - Invoices posted in seconds instead of days: close the month without the AP backlog - Duplicates, price creep and over-billing caught before posting, with the reason explained - Everything syncs two-way with SAP: POs and receipts read, supplier invoices written back ## How AP automation works with SAP, end to end ### 01. Invoice captured, any format Suppliers send invoices to your AP inbox, upload them in the Sourced portal, or attach them to the PO thread. AI extracts header and line-level data from PDFs, images and spreadsheets. No templates to maintain, and layouts can change freely. ### 02. Matched against SAP data Sourced reads the purchase order and goods receipt from SAP via OData APIs and compares every invoice line: unit price, quantity, taxes, freight, payment terms. Tolerances are yours to configure. ### 03. Exceptions explained, not just flagged A mismatch arrives with its diagnosis: supplier billed the pre-negotiation price, quantity exceeds what the warehouse received, invoice is a probable duplicate of one posted last week. Each exception routes to the buyer, the warehouse or the supplier, with the supplier follow-up handled by the AI. ### 04. Posted to SAP automatically Matched invoices are created in SAP as supplier invoices via OData APIs, linked to their PO, and enter your existing approval and payment workflows. Nothing changes for treasury. ### 05. Supplier scorecards updated Billing accuracy feeds each supplier's scorecard alongside on-time delivery and quote competitiveness, so chronic over-billers lose ground in the next RFQ automatically. ## SAP alone vs. SAP + Sourced | Capability | SAP + Sourced | SAP alone | | --- | --- | --- | | Supplier invoice entry and payment runs | Yes | Yes | | Invoice capture from email and PDF, line-level, no templates | Yes | Add-on (OpenText VIM) | | Automatic 3-way match against PO and goods receipt | Yes | Manual / partial | | Exceptions with explained cause and automatic routing | Yes | No | | Supplier follow-up for corrected invoices, run by AI | Yes | No | | Duplicate and price-creep detection before posting | Yes | Limited | | Free supplier portal for invoice submission and status | Yes | No | | Upstream RFQ, PO and delivery data in the same system | Yes | No | ## SAP AP automation: frequently asked questions **Q: Does SAP have AP automation built in?** A: SAP's Logistics Invoice Verification (MIRO) performs 3-way checks at posting time and blocks invoices on variance; that part is solid. What SAP does not do natively is capture invoices from email and PDF (that requires add-ons like OpenText VIM) or resolve blocked invoices: explaining why the match failed and routing it to the person who can fix it. Sourced covers capture, matching with explained exceptions, and posting via OData, at a fraction of a VIM implementation. **Q: How does Sourced match invoices in SAP?** A: Three-way, at line level: each invoice line is compared against the purchase order and the goods receipt read from SAP via OData APIs: unit price, quantity, taxes and freight, within tolerances you define. Clean invoices post automatically; mismatches arrive with the cause identified. **Q: What happens when an invoice doesn't match?** A: It is not just blocked: Sourced diagnoses why (price variance, over-billed quantity, missing receipt, probable duplicate) and routes it: to the buyer if the PO needs review, to the warehouse if the receipt is missing, or back to the supplier with an automatic request for a corrected invoice. **Q: Do we need to migrate anything out of SAP?** A: No. SAP remains the system of record; Sourced is an execution layer that reads POs and receipts and writes back supplier invoices via OData APIs. Typical deployment is 2-3 weeks, and your approval and payment workflows in SAP stay exactly as they are. **Q: How do suppliers submit invoices?** A: Three ways, all captured automatically: email to your AP inbox, upload in the free Sourced supplier portal (where they also see payment status, which cuts 'where is my payment?' emails), or attached to the purchase order thread they already use for confirmations. ## Explore the platform - [AI Invoice Matching](https://www.gosourced.ai/en/invoice-matching) — The matching module in depth: capture, 3-way match, exceptions. - [SAP S/4HANA Integration](https://www.gosourced.ai/en/sap-hana-integration) — How the two-way sync with SAP works, object by object. - [Supplier Portal](https://www.gosourced.ai/en/supplier-portal) — Where suppliers submit invoices and track payment status. - [How AI Invoice Matching Works](https://www.gosourced.ai/en/blog/ai-invoice-matching-how-it-works) — Step-by-step guide to 3-way matching with AI. ## See your SAP invoices matched live A 30-minute demo with a sample of your real supplier invoices: watch them captured, matched against SAP, and posted, with exceptions explained. ## Sitemap See [/sitemap.md](https://www.gosourced.ai/sitemap.md) for the full site index.