Amazon Vendor Central and SAP ECC
Integration Agency & Consultants
At high volume, the mismatch between Amazon Vendor Central bulk purchase orders and SAP ECC document hierarchies creates immediate margin erosion. This usually becomes painful when manual EDI mapping fails to account for unit of measure discrepancies or when delayed Advance Shipping Notices (ASN) trigger automatic chargebacks. We connect these systems to stabilise the flow of EDI 850, 856, and 810 messages, ensuring that SAP outbound deliveries align perfectly with Amazon rigid compliance standards to protect your wholesale profit.
Auditing your SAP and Amazon architecture
We connect Amazon Vendor Central and SAP ECC with your ERP and Marketplaces, ensuring your systems work together efficiently. Our consulting services are invaluable for businesses using Amazon Vendor Central, SAP ECC, ERP, and Marketplaces, as our system audit services uncover integration issues and inefficiencies. This enables both our consultants and your team to take decisive action, helping your technology ecosystem run smoothly and efficiently, so you can deliver a great experience to your customers.
Solution Design
For the Amazon Vendor Central and SAP ECC pair, SAP remains the system of record for batch tracking and financial reconciliation while Amazon triggers fulfilment. A critical design decision involves the EDI 855 Purchase Order Acknowledgement. We typically configure system triggers to emit acknowledgements within the strict 24 hour Amazon window to prevent automatic cancellations. A primary trade-off is the frequency of Advance Shipping Notices (ASN). Sending ASNs immediately upon shipment ensures compliance but risks penalties if carrier codes or shipping data in SAP are not fully validated. We often sequence automated ASN transmissions after initial data validation, while leaving complex backorder cancellations for manual review. This ensures finance reconciles invoices against Amazon remittances while warehouse operations work from validated SAP outbound deliveries.
Mapping SAP outbound deliveries to EDI
The integration manages the transition from Amazon's bulk purchase orders to SAP ECC Sales Orders. SAP acts as the authoritative source for inventory and batch details, feeding the Advance Shipping Notice once the outbound delivery is packed and carrier details are verified. Precise mapping rules bridge the gap between Amazon's purchase order units and SAP Material Numbers, ensuring unit-of-measure alignment to prevent over-shipment. Monitoring is embedded to catch invoice rejections and shortages before they impact month-end reconciliation. This sequence ensures that status updates and financial postings move only when the previous stage in the SAP document hierarchy is validated, protecting margins from Amazon chargebacks.
Orchestrating workflows via secure IPaaS middleware
Leveraging IPaaS with ISO 27001 and SOC 2 and above security accreditations enables secure, efficient integration between Amazon Vendor Central, SAP ECC, Marketplaces, and ERP systems. IPaaS simplifies connecting Amazon Vendor Central and SAP ECC to Marketplaces and ERP platforms, reducing manual effort and risk. The centralised approach ensures data integrity, compliance, and scalability, while robust security standards protect sensitive business information throughout the integration process.
Monitoring operational exceptions and chargeback risks
Standard system logs often hide the specific reasons for an Amazon data rejection. We surface these gaps before they become chargebacks, providing visibility into where a purchase order mismatch or a shipping notice timing error occurred. Monitoring focuses on identifying shortage claims where SAP's pick quantities do not align with Amazon's receipt. This early detection allows ops teams to rectify shipping discrepancies before the invoice stage. By surfacing operational exceptions rather than just technical status, teams can focus on preventing financial penalties rather than just clearing sync queues.
Operational handover for finance and logistics
Handover ensures finance, warehouse ops, and ecommerce teams own the daily health of the Amazon flow. We move beyond technical manuals to provide operational documentation written for those running the business. Your team learns to monitor for rejected purchase orders and manage system blocks before they delay fulfilment windows. We define clear ownership for exception types: finance handles invoice rejection codes, while ops manages shipping discrepancies. This transition covers what to check daily, weekly, and monthly to keep reporting accurate. Training is anchored in the specific design decisions of your SAP setup, ensuring your staff can interpret alerts and act without technical intervention.
Governing data compliance and performance scores
Post-launch support focuses on ongoing operational ownership and the prevention of data compliance failures. We monitor the flow for on-time delivery risks and shipping notice discrepancies that could lead to financial penalties. When Amazon's requirements change or SAP batch details fail to sync, our monitoring surfaces the issue before it impacts your performance score. We provide a clear escalation path for the ecommerce and finance teams, ensuring that any reconciliation or fulfilment gap is prioritised by people who understand the commercial consequences of a blocked Amazon invoice.
Common failures
Unit of measure mismatch
Operational impact: Amazon issues a Purchase Order for 100 cases, but the integration creates an SAP ECC Sales Order for 100 single units. This leads to incorrect picking in the warehouse, rejected Advance Shipping Notices (ASNs), and subsequent invoice rejections. The finance team is then forced to manually reconcile chargebacks for under-delivery, directly eroding the profitability of each shipment.
Prevention / Action: The integration's mapping logic must translate Amazon's unit of measure (e.g., 'case') to the correct SAP base unit of measure for each SKU upon receipt of the purchase order IDoc. This translation should occur before the Sales Order is created. An exception process should hold any PO with an unrecognised unit for manual review, preventing incorrect fulfilment data from reaching the warehouse.
Delayed or inaccurate Advance Shipping Notices
Operational impact: Amazon's procedures require a valid EDI 856 (ASN) to be received before a delivery arrives. If the integration sends the corresponding DESADV IDoc from SAP ECC too late, or with incorrect SSCC pallet codes, Amazon's systems automatically issue a chargeback. This creates a constant financial drain and places a heavy administrative burden on the fulfilment and finance teams to investigate and dispute penalties.
Prevention / Action: The integration process must ensure the DESADV IDoc is generated and transmitted immediately after the Post Goods Issue (PGI) is posted in SAP, not on a delayed batch schedule. Mappings must be regularly audited to ensure they populate the correct, Amazon-approved carrier codes and other required data. The entire outbound fulfilment process, from picking to dispatch confirmation in SAP, should be designed to meet Amazon's ASN timing window.
Purchase Order Acknowledgement errors
Operational impact: Failing to send a timely and accurate EDI 855 Purchase Order Acknowledgement (POA) confirming quantities and delivery dates damages supplier performance metrics. If SAP's Available-to-Promise (ATP) check is not part of the workflow, the business may acknowledge an order it cannot fulfil. This results in late shipment chargebacks and requires operations teams to manage stockout exceptions with Amazon's buying team.
Prevention / Action: Configure the integration to trigger the outbound acknowledgement IDoc from SAP ECC only after the Sales Order is created and the ATP check is complete. This ensures the POA reflects actual stock availability and realistic fulfilment dates. Define a clear operational process for handling discrepancies where SAP's confirmed quantity differs from Amazon's requested quantity, allowing the commercial team to manage the exception proactively.
Mismatched product identifiers
Operational impact: EDI documents are rejected because Amazon uses a GTIN or ASIN, while SAP ECC uses a different internal material number, often with specific padding or formatting. Every rejected transaction for a PO, ASN, or invoice stalls the order-to-cash process, creating significant manual work for master data and finance teams who must investigate and correct each failure. At volume, this can lead to serious payment delays and threaten the fulfilment SLA.
Prevention / Action: SAP ECC should remain the system of record for the internal material master, but the integration layer must maintain a robust cross-reference table that maps SAP SKUs to Amazon's required identifiers. This mapping must be invoked for all inbound and outbound transactions. Implement monitoring that automatically alerts the data management team if a Purchase Order arrives with an identifier that has no corresponding entry in SAP, preventing it from proceeding.
Frequently asked questions
How does the integration handle discrepancies between Amazon's case pack orders and our SAP 'each' units?
This is a primary source of 'Shortage Claim' chargebacks and requires careful mapping. The integration must translate units from the inbound Amazon Purchase Order (EDI 850) into the correct base unit of measure for the Sales Order in SAP ECC. For example, an Amazon order for 100 cases of 12 must create an SAP Sales Order for 1,200 individual units to ensure accurate fulfilment and invoicing.
What happens if Amazon cancels a Purchase Order after it has been sent to SAP ECC?
This is a frequent issue, as Amazon's cancellation window is extremely short. A robust integration must process the EDI 860 Purchase Order Change message from Amazon and immediately update or cancel the corresponding Sales Order in SAP ECC. Failure to do so means you risk shipping an order that is no longer wanted, leading to refused deliveries and penalties.
How can we avoid chargebacks related to Advance Ship Notice (ASN) errors?
Preventing ASN chargebacks depends on sending a valid EDI 856 document from SAP ECC that perfectly matches Amazon's strict requirements. The integration must correctly map data like the carrier code and generate accurate SSCC pallet labels for every shipment. Any mismatch between the EDI 856 data and the physical delivery can result in Amazon rejecting the transmission and applying a penalty.
Our SKUs in SAP have a different format than Amazon's ASINs. How is this managed?
This is a common data transformation challenge that the integration layer must handle. For example, a padded 10-character SKU in SAP ECC must be correctly mapped to the corresponding ASIN or UPC expected by Amazon Vendor Central. This ensures that outbound documents from SAP, like the EDI 856 ASN, are not rejected due to unrecognised item identifiers.
How is the invoice-to-cash process handled between SAP ECC and Amazon?
The integration automates the order-to-cash cycle by generating an EDI 810 Invoice from SAP ECC after the goods issue is posted, and transmitting it to Amazon. When Amazon sends a payment advice (EDI 820), the integration can match this against open invoices in SAP. This flags any payment discrepancies, such as deductions for chargebacks, for the finance team to review.