Amazon FBA and Merret Retail Assist
Integration Agency & Consultants
When marketplace volume increases, the friction between Amazon FBA sales data and Merret Retail Assist financials often leads to significant manual overhead. If inventory levels and settlement reports are not synchronised, finance teams frequently struggle to reconcile marketplace activity against the central ERP record. This integration automates the flow of sales and stock data, ensuring that month-end reporting reflects actual marketplace performance without the need for manual spreadsheet work.
Audit your internal systems and architecture
We connect your Amazon FBA and Merret Retail Assist integrations with Marketplaces and ERP systems quickly and efficiently. Our consulting services are invaluable, offering in-depth system audits that uncover inefficiencies and integration gaps. These audits empower both our consultants and your team to take decisive action, ensuring your tech ecosystem—including Amazon FBA, Merret Retail Assist, Marketplaces, and ERP—runs smoothly. This enables you to deliver a consistently excellent customer experience and keep your operations running at their best.
Solution Design
Our design for Amazon FBA and Merret Retail Assist prioritises financial reconciliation and inventory accuracy. Merret typically acts as the central system of record for financials, while Amazon FBA provides the source data for marketplace sales and stock movements. A core design decision involves the trade-off between real-time sync and data stability. We often favour batched settlement processing to ensure the Merret General Ledger aligns perfectly with Amazon reports, rather than chasing intra-day totals that are prone to timing drift. Inventory levels are sequenced to sync at defined intervals to protect Merret from high-volume volatility while maintaining accurate availability. This logic ensures finance closes the month based on reconciled marketplace data, while operations works from a stable view of FBA stock.
Sync settlement data and inventory records
The integration uses Merret Retail Assist as the central system of record for inventory and financials, with Amazon FBA feeding in sales and stock movement data. Sales orders flow into Merret to keep financial reporting current, while inventory levels are updated to reflect FBA activity. The integration handles Amazon Settlement Reports by mapping order lines and fees to your accounts in Merret. Monitoring these flows at the transaction level helps identify discrepancies before the month-end close, maintaining data integrity between marketplace activity and the ERP.
Orchestrate secure flows via certified IPaaS
Leveraging IPaaS with ISO 27001 and SOC 2 and above security accreditations enables secure, efficient integration between Amazon FBA, Merret Retail Assist, Marketplaces, and ERP systems. This approach simplifies connecting Amazon FBA and Merret Retail Assist to Marketplaces and ERP platforms, ensuring data protection and compliance. IPaaS platforms reduce manual effort, support scalability, and provide robust security, making integration projects faster, safer, and more reliable for retail businesses.
Trace data drift and transaction exceptions
Dashboards often hide the specific issues that disrupt a month-end close. We focus on identifying hidden data drift, such as stock level mismatches between Amazon FBA and Merret or settlement lines that fail to map to the correct GL code. The Cogent platform monitors these integration behaviours and surfaces failures early so they can be resolved before they cause financial discrepancies. This ensures that the data moving between your marketplace and ERP is consistent and accurate.
Handover for finance and operations teams
Handover ensures finance, operations and ecommerce teams own the daily health of the Amazon FBA to Merret Retail Assist flow. We provide operational documentation that clarifies where stock and sales data originate and how they reconcile within the ERP. Finance learns to identify settlement discrepancies, while operations teams manage exception alerts for inventory mismatches or stalled data. This documentation is written for the people running the business, not for IT, providing a clear reference for daily and monthly checks. Training is anchored in your specific configuration, ensuring every team member understands their role in maintaining data integrity across the system pair.
Maintain integration health and data integrity
Support focuses on ongoing operational health rather than just technical uptime. We monitor the integration for data exceptions, such as failed inventory updates or unmapped settlement codes, and provide a clear escalation path for issue resolution. After launch, we maintain ownership of integration performance, ensuring that as Amazon or Merret updates their interfaces, your data flows remain stable. This proactive monitoring allows your team to focus on growth while we ensure the integrity of the connection between your marketplace and ERP.
Common failures
Inventory latency and overselling
Operational impact: When Merret's inventory position is not updated frequently enough, Amazon's view of available stock becomes stale. This leads to overselling on high-velocity SKUs, increasing the workload for customer service teams who must manage cancellations. Operations and finance teams then face difficulties reconciling stock levels between physical warehouses, Merret's records, and Amazon's fulfilled units.
Prevention / Action: The integration logic must account for Merret's batch processing schedule, while implementing a separate, high-frequency sync for FBA inventory levels. A safety buffer stock can be configured in Merret and excluded from the quantity pushed to Amazon, providing a cushion against overselling. Processes must also differentiate between 'Sellable' and 'Unsellable' FBA stock to ensure only commercially available inventory is reflected.
Settlement report reconciliation failures
Operational impact: Amazon's Settlement Reports contain all financial data, including sales, FBA fees, storage charges, and refunds. If the integration fails to correctly parse these reports and create corresponding journals in Merret, the finance team cannot reconcile bank payouts. This results in time-consuming manual investigations at month-end and prevents accurate SKU-level profitability analysis.
Prevention / Action: Design the integration to ingest Amazon's Settlement Reports on a scheduled basis, mapping each transaction type to a specific general ledger account in Merret. The process should create batched journal entries that align with Amazon's payout frequency. Implement robust exception handling to flag any unmapped SKUs or new fee types for review by the finance team, preventing silent reconciliation gaps.
SKU and product data misalignment
Operational impact: If the SKU in Merret does not exactly match the 'MerchantSKU' in Amazon Seller Central, all automated processes will fail. Inventory updates from Merret will not find the correct listing, and sales orders from Amazon cannot be matched to the right item record in Merret. This forces constant manual data correction by merchandising teams and leads directly to overselling of some items and underselling of others.
Prevention / Action: Merret must be designated the single source of truth for product master data, especially the SKU. Enforce a process where products are created and finalised in Merret before being listed on Amazon. The integration should run a regular audit comparing SKU lists from both systems, automatically flagging mismatches for correction before they cause transactional failures.
Misrouting of FBA vs merchant-fulfilled orders
Operational impact: If the system does not correctly differentiate 'Fulfilled by Amazon' (FBA) from 'Fulfilled by Merchant' (FBM) orders, stock and fulfilment processes break down. The operations team may attempt to dispatch FBA orders that Amazon already handles, creating confusion and unnecessary cost. More critically, FBM orders might not be routed to the warehouse at all, causing severe fulfilment delays, missed SLAs, and negative seller feedback.
Prevention / Action: The integration's order processing logic must be built to use the 'FulfillmentChannel' field in Amazon's order data as the primary routing instruction. FBA orders should trigger stock level adjustments in Merret but not generate pick lists for the merchant's warehouse. FBM orders must trigger the standard sales order and fulfilment process within Merret, allocating stock from the correct merchant-owned facility.
Frequently asked questions
What happens if our Merret SKUs are longer than Amazon's character limit?
Merret's SKU structure can sometimes exceed Amazon's character limit, causing product data to be truncated and preventing a match during stock syncs. This means inventory levels for affected products will not update correctly between Merret Retail Assist and Amazon FBA. As a result, those SKUs cannot be reliably sold via FBA until the identifiers are aligned.
How do we prevent overselling when Merret's inventory updates are batch-based?
Merret Retail Assist often relies on batch processing for updates, which can create a time lag in reflecting the latest inventory position. If a high volume of sales occurs on Amazon FBA, Merret's master inventory level might not account for this immediately, risking overselling on other sales channels. A correctly configured integration must prioritise FBA stock movements to ensure the central Item record in Merret stays accurate.
How does this integration handle Amazon's fees for financial reconciliation in Merret?
The integration uses Amazon's Settlement Reports, which are the financial source of truth for all sales, refunds, and associated FBA fees. This data is mapped to post correctly summarised journal entries into Merret Retail Assist for the finance team to reconcile against payouts. Without this, staff would have to manually match each Amazon payout to thousands of individual orders, significantly delaying the month-end close process.
FBA inventory includes returned or damaged stock. How does that affect stock levels in Merret?
A common failure is not differentiating between Amazon's 'Sellable' and 'Unsellable' inventory during a stock sync. The integration must be configured to map these distinct FBA statuses to the correct stock positions within Merret Retail Assist. If all stock is combined, Merret's view of 'available-to-sell' inventory becomes inflated, leading to inaccurate reporting and overselling.