ERP for Amazon Seller Central

Before the first order imports, we diagnose the ownership contract between Amazon Seller Central and your ERP. This discovery phase identifies where financial trust usually breaks down. We map the source of truth for inventory and determine how the finance team will reconcile Amazon settlement reports against ERP ledger entries.

Our discovery process focuses on four operational decisions: - Payout Reconciliation: How the ERP will ingest Amazon settlement files and map complex marketplace fees to specific GL codes. - Inventory Truth: Which system holds the master stock count and how to handle 'Pending' orders that reduce available-to-sell stock but haven't cleared payment. - Tax Treatment: How VAT and marketplace-specific tax responsibilities are assigned to ensure your month-end reporting is audit-ready. - Exception Ownership: Who handles the 'ghost inventory' alerts and Amazon-initiated refunds that occur before the ERP sees the return.

We focus on the decisions that prevent month-end close from stretching into weeks. We identify the manual workarounds currently hiding in your spreadsheets so the integration can replace them with a governed process.

The integration between Amazon Seller Central and the ERP is built on a strict ownership boundary for financial and stock data. Orders typically flow to the ERP for fulfilment or reconciliation, while inventory truth remains mastered in the ERP and pushed to Amazon to prevent overselling. A core design decision involves the treatment of Amazon Payouts: we prioritise batch processing of settlement reports to capture complex fees and marketplace-specific tax entries directly into the ERP general ledger. This creates a trade-off where financial data may lag intra-day reporting, but month-end reconciliation is significantly more accurate. This design ensures finance closes the books based on verified payouts while the ops team manages stock levels and order status across the warehouse.

The integration manages three critical data paths: order ingestion, inventory sync, and financial settlement. Amazon orders are captured and posted to the ERP as Sales Orders, ensuring stock is reserved or decremented correctly. To avoid source-of-truth ambiguity, the ERP acts as the master for inventory levels, pushing available-to-sell counts to Amazon on a defined trigger. The most complex layer is the settlement flow, where Amazon fees, shipping credits, and customer refunds are mapped from the Settlement Report into ERP Journal Entries. We embed monitoring at each stage to detect settlement drift or missing line items early, preventing sync errors from compounding into reconciliation gaps at month-end.

Midmarket brands scaling on Amazon eventually face a choice between a direct ERP connection and an integration layer. Direct connections are often sufficient for basic order-to-cash flows where the ERP handles SKU mapping and local stock. However, as marketplace complexity grows, an orchestration layer becomes necessary to manage the reconciliation debt that piles up between Amazon payouts and your general ledger.

For high-volume sellers, an integration layer like Patchworks or Cogent AI acts as a governance gate. This allows finance teams to handle Amazon Settlement Reports without manual CSV manipulation, mapping marketplace fees and tax adjustments directly to the correct ERP accounts. It also prevents the sync illusion of real-time inventory by enforcing safety buffers and protecting against overselling when FBA and merchant-fulfilled orders compete for the same stock pool. If your operating model relies on a single source of truth for both financials and inventory, the middleware choice determines how much manual intervention your finance team survives each month-end close.