Amazon Vendor Central and BigCommerce
Integration Agency & Consultants
Amazon Vendor Central operates on a strict clock. Between the moment a Purchase Order arrives and the window for an Advanced Shipping Notice closes, there is no room for manual data entry. When volume increases, the friction between Amazon's rigid EDI requirements and BigCommerce's product catalogue creates operational latency, leading to rejected shipments and financial chargebacks. We bridge this gap, ensuring wholesale procurement logic and retail ecommerce data stay in sync to protect your vendor status and fulfilment timing.
Auditing your marketplace and ecommerce architecture
We connect your Amazon Vendor Central and BigCommerce integrations quickly, supporting your ecommerce and marketplace operations. Our consulting services are invaluable, offering a thorough system audit that uncovers inefficiencies across Amazon Vendor Central, BigCommerce, and other ecommerce platforms. This enables our consultants and your team to take decisive action, ensuring your marketplace and ecommerce tech ecosystems run efficiently. With our expertise, you can deliver a superior customer experience and keep your business competitive in the ever-evolving world of marketplaces and ecommerce.
Solution Design
For this pair, we typically establish BigCommerce as the catalogue master and Amazon Vendor Central as the procurement engine. A core design decision involves matching Amazon’s rigid requirements with BigCommerce schemas, specifically regarding quantity and unit mapping. We prioritise the bidirectional sync of Purchase Order acknowledgements to meet strict fulfilment windows. One critical trade-off is the frequency of inventory updates: real-time pushes ensure accuracy but can increase system load, so we often implement a defined sync schedule. This design allows finance to close the month based on confirmed data while operations work against the immediate priorities set by incoming Amazon purchase orders. These decisions ensure your operational compliance remains intact through structured data handling.
Connecting purchase orders and inventory flows
The integration establishes a bidirectional data flow where Amazon Vendor Central acts as the procurement source and BigCommerce serves as the order processor. When a Purchase Order is issued, it is automatically posted to BigCommerce, respecting mappings that translate wholesale quantities into your retail SKU structure. Inventory availability is pushed from BigCommerce to Amazon on a defined schedule to prevent overselling while protecting core retail stock. We embed monitoring at the point of shipping notice submission, ensuring the carrier details match Amazon's strict requirements before the transmission occurs. This sequencing helps prevent the data drift that causes invoice mismatches and operational delays.
Enterprise security and integration orchestration standards
Leveraging IPaaS with ISO 27001 and SOC 2 and above security accreditations, integration between Amazon Vendor Central and BigCommerce is delivered efficiently and securely. This approach supports Ecommerce businesses connecting to Marketplaces like Amazon Vendor Central and BigCommerce, ensuring data protection and compliance. IPaaS platforms simplify complex Ecommerce integrations across Marketplaces, reducing risk and manual effort while maintaining robust security and operational reliability.
Monitoring data integrity and operational exceptions
Dashboards often provide a false sense of security by showing that a sync was successful while ignoring data mismatches within the payload. We move beyond simple status lights to surface operational exceptions, such as product mapping failures where an Amazon identifier does not have a corresponding BigCommerce record. These hidden issues often compound, leading to rejected shipping notifications that no one notices until a financial penalty occurs. Our platform monitors the integrity of the data handshake, alerting your team to discrepancies in quantity or shipping methods early enough to intervene before the fulfilment window closes. This ensures that visibility is tied to commercial consequences, not just technical logs.
Operational handover and workflow ownership training
Handover ensures that your finance, operations, and ecommerce teams take full ownership of the daily Amazon Vendor Central and BigCommerce workflow. We provide a clear operating model that defines where inventory and order data live and who is responsible for each exception type, such as rejected shipping notifications or order mismatches. Training focuses on practical daily checks and how to interpret alerts from the integration layer. All documentation is written as an operational reference for the people running the business, not as a technical archive for IT, ensuring your team remains confident in managing fulfilment windows and catalogue accuracy once the project is complete.
Maintaining compliance and preventing vendor chargebacks
Post-launch, we provide ongoing operational oversight to ensure tight Amazon shipping windows are met. We monitor the bidirectional flow of purchase orders and shipping notices (ASN), flagging product mismatches or schema errors before they result in financial chargebacks. If a sync fails or Amazon requirements update, our team manages the resolution to protect your performance metrics. This is not just technical maintenance; it is active monitoring of your Amazon and BigCommerce connection to prevent operational drift.
Common failures
Rejected Advanced Shipping Notices (ASNs)
Operational impact: Amazon rejects the EDI 856 (ASN) file because data from BigCommerce, such as product weights or packaging dimensions, does not meet its rigid format requirements. This results in immediate chargebacks for non-compliance and can delay payment for entire shipments. The fulfilment and finance teams are then forced into manual remediation to correct the data and dispute the penalties, which jeopardises the account's Preferred Vendor status.
Prevention / Action: Map BigCommerce product data to a canonical model in the integration layer before generating the EDI 856 file. This model must enforce all Amazon-required fields, formats, and validations. Treat the relevant product data fields within BigCommerce as mandatory and build specific exception handling for any Purchase Order lines that fail validation, preventing them from reaching the ASN generation stage without review.
Case pack versus individual unit conflicts
Operational impact: Amazon orders a case pack of 12 units via an EDI 850 Purchase Order, but the integration interprets the SKU from BigCommerce as 12 individual units. This causes the dispatch system to generate incorrect pick lists and shipping documents, leading to mis-shipments. The finance team then struggles to reconcile Amazon's invoice against warehouse fulfilment records, resulting in payment disputes and costly chargebacks.
Prevention / Action: Establish a clear unit-of-measure hierarchy within BigCommerce using custom fields or metafields to define 'eaches', 'inner cartons', and 'master cases' for each SKU. The integration logic must be designed to parse the incoming Amazon Purchase Order, identify the unit of measure, and translate it to the correct SKU and quantity in BigCommerce. This logic should serve as the single source of truth for all PO processing.
Late Purchase Order acknowledgements
Operational impact: The integration fails to send the EDI 855 (Purchase Order Acknowledgement) to Amazon within its strict time window, often due to delays in creating the Sales Order in BigCommerce or performing stock checks. This automatically triggers a compliance chargeback. If it happens repeatedly, Amazon may reduce future order volumes or suspend the vendor relationship entirely, posing a direct threat to the sales channel.
Prevention / Action: Decouple the PO acknowledgement from the full order processing workflow. The integration should be designed to immediately parse the inbound EDI 850 document, perform a high-availability stock check against a dedicated inventory cache, and transmit the EDI 855 acknowledgement straight away. The creation of the Sales Order in BigCommerce can then follow, with robust exception handling for any stock discrepancies found after acknowledgement.
Mismatched invoicing and payment delays
Operational impact: The EDI 810 (Invoice) file sent to Amazon is rejected because its line items, quantities, or prices do not exactly match the original EDI 850 (Purchase Order). This frequently happens if an order is edited in BigCommerce after the PO is received. The rejection blocks payment entirely, forcing the finance team to manually find the discrepancy between the BigCommerce Sales Order and Amazon's PO record, then correct and resubmit the invoice.
Prevention / Action: The original Amazon Purchase Order (EDI 850) must be treated as the immutable source of truth for generating the EDI 810 invoice. Integration logic should retrieve the original PO data when constructing the invoice, rather than using the state of the BigCommerce Sales Order, which could have been altered. Any genuine commercial changes must be handled through a separate process with Amazon, not by editing the order in the e-commerce platform.
Frequently asked questions
How does an Amazon Purchase Order (PO) get from Vendor Central into BigCommerce?
The integration automatically collects EDI 850 Purchase Orders from Amazon Vendor Central and creates the corresponding Sales Orders in your BigCommerce system. This removes the need for manual data entry, which is a primary cause of errors and missed shipping windows as order volumes grow. The system must also send back an EDI 855 Purchase Order Acknowledgement to Amazon to confirm receipt and acceptance.
How can an integration prevent Amazon chargebacks for late or inaccurate shipping notices?
Most chargebacks happen because the Advanced Shipping Notice (ASN) is sent to Amazon outside their required window. By automating the flow from an Amazon Purchase Order to a BigCommerce Sales Order, your fulfilment process starts faster. As soon as the items are dispatched, the integration can automatically generate and transmit the EDI 856 ASN back to Vendor Central, ensuring it arrives on time and with accurate data from the original order.
What if our 'case pack' quantities in BigCommerce don't match how Amazon orders?
This is a frequent source of integration failure, leading to rejected ASNs and invoices because the quantities do not align. For instance, Amazon may order 50 'cases' via an EDI purchase order, but BigCommerce only understands the single unit 'each'. A properly configured integration must translate this bulk quantity into the correct number of individual SKUs on the BigCommerce Sales Order, ensuring fulfilment and invoicing are accurate.
Which system is the source of truth for inventory, and how does Amazon know what is in stock?
In this operating model, BigCommerce typically acts as the master for your product catalogue and inventory levels for each SKU. The integration's job is to send regular inventory updates to Amazon Vendor Central, often using an EDI 846 Inventory Advice feed. This keeps Amazon informed of your stock position and helps prevent them from raising Purchase Orders for items you cannot fulfil, which is key to maintaining your vendor score.