Fashion ERP Integration That Masters Every Variant
A women's blazer in eight colours and six sizes produces 48 variants — each with its own EAN, stock level and price. We build the integration architecture that reliably brings variant matrices, seasonal collections and omnichannel stock from your fashion ERP into the shop.
two-way
real-time sync
50+
integration projects (project experience)
48
variants per style automated (project experience)
99.8 %
interface uptime (project experience)
Fixed prices · net plus VAT
- Fixed price per connection instead of an open estimate
- Variant matrix, season logic and omnichannel stock included
- JTL-Wawi, Microsoft Dynamics 365 and SAP Business One connected
- Binding price after a free system analysis
JTL inventory management from 4,900 €, Microsoft Dynamics 365 Business Central from 6,900 €, SAP Business One from 9,900 €. Marketplace connection from 2,480 € per channel, extensions on a time basis 990 € per project day (119 € per hour). Connector and middleware licences are shown transparently and separately. All prices net plus VAT. The project day is a package price for a reserved working day and therefore deliberately not a multiple of the hourly rate — the rationale is on the pricing overview.
No other retail sector places higher demands on variant management than the fashion industry. Every article exists as a combination of colour, size and material finish. Every combination has its own EAN, its own image, its own stock level and often its own price. Add seasonal collection cycles where hundreds of articles must be activated or deactivated simultaneously, and the result is a data logistics challenge that must be handled by design, not worked around. We develop interfaces that keep your fashion ERP and online shop in sync — from the variant master record through collection data to stock levels at unit precision. Explore our full integration services.
The Unique Challenges of Fashion ERP Integration
In the fashion segment, the data structure differs fundamentally from other industries. A base article — often called a model or style in the ERP — is not an independent ordering unit. It is a container for a variant matrix of colour and size. While a tool retailer manages a screwdriver with one EAN and one stock figure, a fashion retailer manages the same position as 48 individual SKUs, each of which is ordered, delivered and sold separately. This fundamental structure must be mapped correctly by the interface.
Seasonal cycles add further complexity: spring/summer and autumn/winter alternate, carry-over articles span multiple seasons, sale phases activate tiered price reductions and pre-order windows allow orders for goods not yet in stock. Each of these phases has its own rules for visibility, pricing and availability, which must be driven by the ERP and executed in the shop. Multiple sales channels are also common: the shop, marketplace connections and the physical store must share the same stock without risking oversales.
Variant Matrix and SKU Management
The article hierarchy of base article, colour variant and size is fully synchronised from the ERP. Each SKU receives its own EAN, stock information and, where applicable, an individual price.
Collection and Season Control
Planned activation and deactivation of entire collections according to a season calendar. New styles appear in the shop on the defined date; end-of-life articles are automatically deactivated.
Real-Time Inventory Sync
Unit-precise stock management per SKU with event-based synchronisation. Reservation logic prevents oversales even when the same product is sold simultaneously in the shop and in the physical store.
Seasonal Pricing and Sale Control
Regular prices, tiered sale discounts and pre-order prices are taken from the ERP. Sale phases activate automatically on the defined date without manual intervention in the shop.
Product Images and Media Management
Colour variant images, lookbook shots and detail photos are automatically assigned to the correct SKUs. New season visuals are synchronised when the collection is created.
Omnichannel Inventory Logic
A shared stock pool for shop, physical store and marketplaces. The middleware manages reservations across channels and prevents oversales across all touchpoints.
Variant Matrix: The Core of Fashion Integration
The central data challenge in fashion retail is the variant matrix. A base style is created in the ERP with colour options and a size table. The size table follows different standards depending on the product category: clothing sizes for outerwear (XS to 4XL or 34 to 52), shoe sizes in EU, UK and US, ring sizes in millimetres, or trousers with waist and inseam measurements. The interface must understand these structural differences and translate them correctly into the shop's variant model.
We implement a variant importer that reads the style structures from your fashion ERP and transfers them to the Shopware CE variant system. Colour variants are created as the parent option group, size variants as the subordinate option. Each resulting SKU receives its own EAN from the ERP, its own stock figure and, where the pricing model calls for it, an independent price. Product images are assigned to the colour variant so that the shop automatically displays the correct image when the customer switches colour, without any additional import trigger.
From ERP Style to Shop Variant Structure
Colour variants and size grids mapped correctly
The interface translates the style hierarchy from the ERP directly into the Shopware variant structure. Every colour-size combination is orderable in the shop as a standalone SKU with stock and EAN. Image assignment by colour code ensures correct display automatically.
- Base article, colour variant and size as a three-tier hierarchy
- EAN per SKU synchronised from ERP, no manual effort
- Variant images per colour code, assigned automatically
- Different size grids per product category supported
Season Planning and Collection Control
The fashion industry lives by seasonality. Twice a year, a large part of the assortment is replaced. New collections are created and maintained in the ERP weeks before launch so that purchasing, warehousing and sales are prepared. The shop should show the new collection only on the defined launch date, not as soon as the record is created in the ERP. End-of-life articles should remain visible through the full clearance phase and then be deactivated without manual intervention.
We implement a season control layer in the middleware that reads collection data and activation dates from the ERP and controls the shop import accordingly. New season articles are imported in advance and set to 'not visible' in the shop until the defined publication date is reached. Carry-over articles that move from one season to the next retain their product pages and reviews. Sale articles receive their price reductions at the defined sale start date automatically from the ERP, with no manual action needed in the shop.
Pre-Order and Forward Selling
Inventory Management in Fashion: Unit-Precise Across All Channels
In fashion retail, inventory accuracy is especially critical because assortment depth is high and quantities per SKU are often low. A top in size S, colour navy blue, may have only three units in stock. If one is sold in the store, one ordered online and one reserved in the warehouse, shop availability is immediately exhausted. The inventory system integration must reflect this fine-grained stock situation in real time, since even a single oversale triggers downstream costs through cancellation, reversal processing and customer communication.
We implement event-based inventory synchronisation that reacts immediately to every stock change. Goods receipt, picking, in-store sale and return each trigger a sync event that updates the shop stock of the affected SKU. A cross-channel reservation logic blocks stock at the point of cart creation, not at order completion. This allows the same stock pool to be safely shared between the online shop, physical store and marketplace channels without oversale risk. For seasonal peak periods such as collection launch or start of sale, the synchronisation is designed for elevated load.
Event-Based Inventory Alignment
Every stock movement — goods receipt, picking, in-store sale, return — triggers a sync event. Shop stock per SKU is always current without waiting for batch cycles.
Oversale Protection
Stock reservation from the moment the cart is created, not at order completion. Even with parallel orders for the same article, no oversale is possible.
Omnichannel Pool Management
A central stock pool for shop, store and marketplaces. The middleware distributes reservations by channel weight and alerts automatically when supply is tight.
Automating Price Management and Sale Phases
Price management in fashion differs from other industries through its time dimension. An article has an entry price at collection launch, a promotional price after several weeks, a sale price at clearance and possibly a final markdown at season end. This pricing progression is planned in the ERP and must be transferred to the shop automatically, without the editorial team intervening manually at every price change.
Our price middleware reads the price schedule per article from the ERP and synchronises price changes on the defined date. Crossed-out prices (former RRP) are transferred as reference prices and presented correctly as historical comparison values in line with applicable pricing law requirements. Trade wholesale pricing tiers, volume discounts and customer-group-specific conditions are synchronised simultaneously in the correct hierarchy. Via API interfaces, price management can also be connected to external pricing tools or revenue management systems.
The Typical ERP Landscape in Fashion Retail
The fashion industry relies on specialised ERP systems that natively represent its structure of collections, seasons, styles and variants. We commonly encounter Microsoft Dynamics 365 with fashion add-ons, JTL-Wawi with variant management extensions and sector-specific solutions. For the accounting integration via DATEV, the shop-ERP integration is often combined with a separate document flow integration.
Regardless of the ERP in use, we analyse the available interfaces and develop the optimal integration path. Modern fashion ERPs offer REST APIs with variant endpoints. Older systems communicate via CSV exports or proprietary flatfile formats. For the latter, we develop transformer components that convert the source format into our unified integration data model, so that the shop-side logic always communicates with the same interface regardless of what sits on the ERP side. Integration of JTL inventory management and marketplace channels can be embedded into the same architecture.
Returns Management and Reverse Logistics
The fashion return rate in German e-commerce reaches up to 50 percent (Handelsverband Deutschland) — significantly higher than in other segments. Every return must flow back into shop stock if the goods are intact, or be written off as unsaleable if damaged. This returns logic must be synchronised between the shop, ERP and logistics service provider so that stock figures are correct at all times and no incorrectly unavailable articles remain blocked in the shop.
Our integration middleware implements a returns workflow that reads the return status from the ERP or warehouse management system and updates shop stock accordingly. Returns assessed as new condition automatically increase shop stock. Damaged or non-resaleable items are written off without a stock increase. Credit notes are generated via the ERP and trigger customer notification in the shop. This keeps the entire return flow transparent and stock accurate, even during return-intensive post-season phases.
ERP Analysis and Variant Inventory
We analyse your article hierarchy in the ERP: how styles, colours and sizes are structured, what EAN numbering system is used and how collections and seasons are represented. This analysis forms the basis for mapping to the Shopware variant model.
Data Cleansing and Master Data Quality
Fashion ERPs accumulate data issues over the years: missing images, inconsistent size tables, duplicate EANs or unset season flags. We identify systematic data quality problems and work with your team on a remediation plan before the live import begins.
Middleware Development and Season Logic
Implementation of the integration middleware with variant importer, season control, price synchronisation and inventory alignment. Integration of returns logic and omnichannel pool management.
Pilot Operation with One Collection
Test run with a complete collection under real conditions. Validation of all variant displays, prices and stock levels. Load testing for seasonal peaks such as sale start or collection launch.
Full Operations and Season Handover
Rollout for all collections, ongoing monitoring and supported season transitions. We are actively present at every major collection changeover to ensure a smooth data flow.
Fixed Prices for Your Fashion ERP Connection
All prices net plus VAT. Every connection starts with a free system analysis and a binding fixed price. Scope, ERP system and channels determine the right path.
Variant Base Package
Connection of your inventory management, for example JTL-Wawi.
- Variant matrix colour × size with EAN per SKU
- Unit-precise stock in near real time
- Regular prices and crossed-out prices in sync
- Variant images per colour code automatically
- Setup and testing included
Collection and Omnichannel
For fashion ERPs such as Microsoft Dynamics 365 Business Central.
- Everything from the Variant Base Package
- Season control with activation date
- Pre-order phases and sale schedule
- Omnichannel stock pool with reservation
- Returns flow back into shop stock
Marketplace per Channel
Connect Amazon, eBay, OTTO Market or Kaufland.
- Stock and order sync per channel
- Attribute and category mapping
- Channel-weighted reservation
- Second channel at a tiered price
- Plugin and middleware licence separate
SAP Business One as a fashion ERP from 9,900 € net. Extensions and custom logic on a time basis: 990 € per project day (119 € per hour). Connector, middleware and plugin licences are shown transparently and separately. A binding offer follows the free system analysis.
Unsure which path fits your fashion ERP?
In the free system analysis we review your variant structure, collection cycles and channels — and give you a concrete fixed price before development starts.
Relevant Services for Fashion Retailers
Inventory System Integration
Complete inventory integration with variants, stock levels and pricing data from your fashion ERP into shop operations.
Marketplace Integration
Stock synchronisation across all channels: marketplace integration for a shared stock pool from ERP, shop and additional channels.
Middleware Development
Custom middleware solutions for complex fashion data flows: variant matrices, season logic, pre-order phases and returns management.
API Development
Tailor-made API interfaces for fashion ERP systems without standardised connectors — including transformers for flatfile and CSV formats.
Frequently Asked Questions About Fashion ERP Integration
In-depth articles: RMA Process describes returns handling between shop and ERP, Inventory Synchronization Across Multiple Warehouses shows stock management across sizes and colours, and PIM Integration explains building the product data pipeline for collections.