The 7 best AP automation software for SAP in 2026

The best AP automation software for SAP posts invoices against live purchase order and goods-receipt data and lets approvers release invoices without an SAP license. Those two capabilities decide how much of your AP work still happens by hand.

66% of AP teams still key invoice data into their ERP manually, according to IFOL's 2025 Accounts Payable Automation Trends report. In SAP, that work lands in MIRO and FB60, one invoice at a time.

This guide starts with where AP projects in SAP stall and what good looks like. Then it compares seven options on how deeply each one works with SAP.

Key takeaways

• Approval is a common bottleneck in SAP AP, because many approvers outside finance have no SAP login.
• Approval apps that run outside SAP let those people release invoices from a browser or phone, without an SAP license for each approver.
• Matching invoices against live purchase order and goods-receipt data in SAP catches price and quantity differences before posting.
• Audit readiness depends on reaching the invoice image and its approval history from the posted SAP document.
• With SAP Business Suite 7 mainstream maintenance ending in 2027, AP software has to run on ECC today and S/4HANA after the move.

What is AP automation software for SAP?

AP automation software for SAP reads incoming supplier invoices, matches them to purchase orders and goods receipts, and posts them in SAP ECC or S/4HANA. Clean invoices post without anyone touching them. Exceptions go to the right person for review, and every step is recorded for audit.

Why invoices stall before they reach SAP

An invoice waiting for approval is an invoice that can miss its cash discount date. In many enterprises the approvers are plant managers or project leads who rarely log in to SAP, so the invoice waits in a queue they never see.

Giving every approver an SAP license adds cost for a few clicks a month. Finance teams evaluating AP software ask for approval outside SAP for exactly this reason.

The fix is an approval step that reaches people where they already work: a browser link or a mobile app, with the invoice image and its coding on one screen. The decision then flows back to SAP.

The same delay starts earlier when invoices land as PDFs in a shared mailbox. Someone has to open and forward each one before approval can begin. Capture that reads the mailbox directly removes that step.

How an invoice should get from inbox to posting

Every invoice keyed by hand is a chance for a typo in an amount or a vendor number. In SAP, fixing a wrong posting means reversing it. Duplicates surface late, at the payment run.

Good AP software reads the invoice, then checks it against the purchase order and goods receipt in SAP before anyone posts it. When that check runs on live SAP data, a price change or a partial delivery shows up straight away.

Clean invoices then post without anyone opening them. Exceptions go to a named person with the reason attached, and the AP team sees each invoice's status in SAP, so nobody has to ask the supplier where an invoice stands.

Capture quality decides how many invoices reach that point. AI-based extraction that learns from corrections handles new supplier layouts without a template for each one.

What audits and your S/4HANA move ask of AP

At audit time, someone will ask who approved this invoice, and when. If the answer sits in an email thread while the posting sits in SAP, someone has to rebuild it by hand.

Look for software that keeps the approval history and the original invoice reachable from the posted SAP document. Auditors and AP clerks then open the posting and see everything behind it.

SAP ends mainstream maintenance for SAP Business Suite 7, including ECC, at the end of 2027. If you run ECC today, the AP software you choose has to move with you to S/4HANA, with the same workflows and the same invoice history.

Read Clean Core certifications closely. SAP certifies one product release for one edition, so check that the certificate covers the AP product you are buying and the S/4HANA edition you run.

Compare the 7 best AP automation software for SAP

Doxis publishes this guide and lists its own platform first. The other six appear in no particular order. Every entry draws on the vendor's own documentation, with reviewer comments linked to G2, Capterra or Gartner Peer Insights.

All seven connect to SAP ECC and S/4HANA in some form, so the table compares where the work happens. A ✓ means the capability is included, and No means the vendor's documentation shows no such capability.

Vendor	Deployment	Invoice processing inside SAP	Document management on the same platform
Doxis	Cloud, on-premises, hybrid	✓ Included	✓ Included
Medius	Cloud	No	No
Basware	Cloud	No	No
Esker	Cloud	No	No
Tungsten Automation	Inside your SAP system	✓ Included	No
Yooz	Cloud	No	No
SAP Concur	Cloud	No	No

Doxis

Doxis is an intelligent content automation platform for enterprise document management and process automation. Its Doxis Invoice for SAP solution runs as an add-on inside SAP, so AP clerks review and post invoices in the system they already work in.

Invoices are read automatically and checked against live purchase order and goods-receipt data in SAP. Matched PO invoices post without anyone keying them into MIRO, and approvers outside finance release invoices in a browser or on their phone, without SAP access.

The original invoice and its approval history stay reachable from the posted SAP document. The same platform also manages the contracts and supplier records the AP team checks invoices against.

Pros

• Invoice processing inside SAP: Review, matching and posting happen in SAP on live purchase order and goods-receipt data, with no second system to reconcile.
• Document management on the same platform: Invoices, contracts and supplier records sit on one platform, so AP checks an invoice against its contract without leaving the process.
• Approval outside SAP: Approvers review and release invoices in a browser or on mobile, without SAP access.
• Audit trail on the SAP document: The approval log and the original invoice image are stored against the posted SAP document.
• Status in SAP: A central invoice monitor in SAP shows every invoice and where it stands, from receipt to posting.
• Fraud checks: Invoices go through fraud checks before approval.
• All inbound channels: Paper, email, EDI and e-invoices through networks such as Peppol run through one process.

Cons

• Built for enterprise AP teams with high invoice volumes, so it is sized beyond what a small business with a low volume needs.

Integrations

• SAP ECC 6.0 (EHP6 or later)
• SAP S/4HANA (2020 SP03 or later)

Deployment

• Cloud
• On-premises
• Hybrid

Medius

Medius is a cloud-based spend management suite with AP automation at its core, from invoice capture to payment. It connects to SAP S/4HANA through a pre-packaged connector, and the suite is hosted on Microsoft Azure.

Pros

• AI invoice processing: Capture and coding use AI, with anomaly detection for fraud and duplicate invoices.
• Managed SAP connector: A pre-packaged connector with SAP certified integration keeps supplier and accounting master data in sync.

Cons

• Invoice processing inside SAP: cloud with connector. Invoices are processed in Medius's Azure-hosted cloud and synced to SAP through a connector, so AP works in a second system next to SAP.
• Document management on the same platform: no. Medius's portfolio covers spend processes, so the wider set of documents behind an invoice needs a separate document management system.
• A G2 reviewer found the initial setup took effort, especially integrating with existing systems (G2)
• Another G2 reviewer said the custom approval reminders could have been better (G2)

Integrations

• SAP ECC
• SAP S/4HANA

Deployment

• Cloud

Basware

Basware is a cloud-based invoice lifecycle management platform with a global e-invoicing network. It connects to SAP through a connector built on SAP BTP, which earned SAP Clean Core certification for SAP Cloud ERP Private in May 2026.

Pros

• E-invoicing network: A global network supports e-invoicing compliance across many countries.
• Clean Core certified connector: The Basware Connector for SAP Cloud ERP Private earned SAP Clean Core certification in May 2026.

Cons

• Invoice processing inside SAP: outside SAP by design. Basware runs AP in its own cloud and keeps it outside the SAP core, so AP clerks and approvers work in Basware next to SAP.
• Document management on the same platform: no. Basware covers the invoice lifecycle, so contracts and other supplier documents need a separate system.
• A G2 reviewer said it sometimes works very slowly with a big database (G2)
• Another G2 reviewer said it tends to be glitchy at times (G2)

Integrations

• SAP ECC
• SAP S/4HANA

Deployment

• Cloud

Esker

Esker is a cloud platform for AP and order management automation. It connects to SAP ECC and S/4HANA through pre-built integration, including a Clean Core integration that uses SAP-released APIs.

Pros

• AP and order management: Accounts payable and order management run on the same cloud platform.
• Pre-built SAP integration: Covers ECC and every S/4HANA edition, with upward compatibility for SAP updates.

Cons

• Invoice processing inside SAP: cloud with connector. Invoices are processed in Esker's cloud and the SAP invoice number is returned to Esker after posting, so AP follows each invoice across two systems.
• Document management on the same platform: no. Esker's portfolio covers AP, AR and order processes, so other documents behind an invoice need a separate system.
• A Gartner Peer Insights reviewer of Esker Source-to-Pay said change requests are slow to implement (Gartner Peer Insights)
• The same reviewer's team does its reporting outside Esker, in SAP Analytics Cloud (Gartner Peer Insights)

Integrations

• SAP ECC
• SAP S/4HANA (on-premises, private cloud and public cloud)

Deployment

• Cloud

Tungsten Automation

Tungsten Automation, formerly Kofax, offers Process Director for AP automation in SAP. Process Director runs within SAP and is used through SAP GUI or SAP Fiori, with a web app for users outside SAP.

Pros

• Invoice processing inside SAP: Process Director works within SAP, handling invoice approvals and PO matching in the SAP environment.
• Users outside SAP: A web app and mobile approval reach approvers who don't work in SAP.

Cons

• Document management on the same platform: no. Tungsten's portfolio centers on capture and process automation, so contracts and other documents need a separate document management system.

Integrations

• SAP ECC
• SAP S/4HANA

Deployment

• Inside your SAP system

Yooz

Yooz is a cloud-based P2P and AP automation platform with more than 250 ERP connectors. For SAP ECC and S/4HANA it uses a REST API integration with bi-directional data flows.

Pros

• PO matching: Two-way and three-way matching against SAP purchase orders.
• Payment status sync: SAP sends payment information back, so Yooz shows which invoices are paid.

Cons

• Invoice processing inside SAP: cloud with API sync. Yooz runs the workflow in its cloud while SAP receives the accounting entries, so each invoice's status is split across Yooz and SAP.
• Document management on the same platform: no. Yooz covers P2P documents, so other records need a separate system.
• A Capterra reviewer found onboarding complicated and needed help from the Yooz team (Capterra)
• Another Capterra reviewer said one request gets too many Yooz numbers, one for the purchase order request and another for the PO (Capterra)

Integrations

• SAP ECC
• SAP S/4HANA

Deployment

• Cloud

SAP Concur

SAP Concur is SAP's cloud suite for expense and invoice management. Concur Invoice handles AP, and approved invoices are posted to SAP ECC or S/4HANA through SAP's integration with Concur solutions.

Pros

• Spend in one suite: Supplier invoices and employee expenses run in one SAP product family.
• SAP-built integration: SAP provides the integration between Concur Invoice and SAP S/4HANA.

Cons

• Invoice processing inside SAP: separate cloud. Concur Invoice runs in SAP Concur's cloud and hands approved invoices to the ERP for posting, so AP works in Concur next to SAP.
• Document management on the same platform: no. Concur covers spend processes, so contracts and supplier documents need a separate system.
• A Capterra reviewer said line extraction is limited to 40 lines, so larger invoices are lumped into one line item, which makes PO reconciliation difficult (Capterra)
• A Gartner Peer Insights reviewer of Concur Invoice said setup complexity remains a challenge (Gartner Peer Insights)

Integrations

• SAP ECC
• SAP S/4HANA

Deployment

• Cloud

Krone meets its cash discount deadlines with invoice verification in SAP

Bernard Krone Holding builds commercial vehicles and agricultural machinery with more than 6,000 employees. Its documents were scattered across many systems, and inbound invoices were processed by hand.

With Doxis, Krone verifies invoices through SAP and web workflows. Supplier and contract records sit on the same platform. Krone now meets its cash discount periods and keeps an overview of all unpaid invoices. Read the Krone story

Your AP requirements should start with where the work happens in SAP

Put two questions at the top of your AP requirements sheet: where does each invoice get matched and posted, and where do the invoice and its approval history live afterward? The answers separate software that works inside SAP from software that syncs with it.

Doxis answers both inside SAP. Invoices are matched on live purchase order and goods-receipt data and posted in SAP, so the AP team works in one system, and approvers outside finance release invoices without an SAP license.

Behind that, the Doxis platform keeps the invoice, its approval log and the contracts it was checked against in one place, reachable from the posting. In a Forrester Total Economic Impact study, SEW-EURODRIVE achieved a 336% ROI with the Doxis platform.

• Invoice review, matching and posting inside SAP on live data
• Approval in a browser or on mobile, without SAP access
• Approval log and original invoice stored against the posted SAP document
• Invoices, contracts and supplier records on one platform
• One approach for SAP ECC today and S/4HANA after the move
• Up to 50% faster processing, from receipt to posting

Book a demo below to see how Doxis handles AP inside your SAP landscape.

FAQs on the best AP automation software for SAP