A deep-dive into VTEX OMS mechanics for engineers building integrations. Covers the four order flow types (Marketplace, Seller, Complete, Chain), the orderForm-to-OMS boundary at the 201 response, order status lifecycle with ERP/WMS action triggers, and a detailed comparison of Feed v.3 (pull-based queue) vs Hook (push webhook) event-consumption patterns. Includes Orders API pagination quirks (30 per_page cap, f_creationDate range syntax), ERP middleware design patterns using Feed v.3 as the foundation with idempotency via orderId, and specific field mappings for paymentData and invoiceData. Chain Flow's payment notification semantics and the OMS indexing independence from order records are highlighted as common integration pitfalls.
Table of contents
TL;DR: What VTEX integrators need to knowWhere VTEX OMS sits inside the commerce platformFrom orderForm to OMS: How an order is createdThe four VTEX order flow types explainedChain Flow in depth: Intermediary stores and payment notificationsOrder status stages: What each means and what to monitorFeed v.3 vs Hook: Choosing the right event-consumption patternVTEX Orders API: Key endpoints, pagination, and date filteringConnecting VTEX OMS to an ERP or back-office systemFAQ: VTEX OMS technical questions developers ask mostWhere to go next: VTEX platform resources45 Impressions