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Integrating Enterprise Resource Planning in B2B E-Commerce

Written by Harmonie Poirier | Aug 14, 2025 3:54:44 PM

ERPs are the central hub of B2B operations, helping consolidate day-to-day tasks within one system. A well-implemented and integrated ERP system works to improve the day-to-day workflow for ecommerce teams. 

Growing your online sales with a website or customer ordering portal is only part of a successful omnichannel strategy. Once you’ve invested in a robust B2B e-commerce platform, and orders start to multiply, most businesses start to see a clear gap; there are too many portals and systems that aren’t connected. 

Without the benefits of ERP integration, your team spends hours copying and pasting orders from your e-commerce site into your ERP. They spend more time chasing down pricing mismatches and reconciling stock levels than selling and moving product. 

Enterprise Resource Planning tools, while integral to operations, do not come with B2B integrations. They can’t transmit data to your websites, portals, or trading partners. Successful use of Enterprise Resource Planning in e-commerce is dependent on your integration strategy. 

This guide will break down how to make ERP integration the catalyst of growth for your ordering ecosystem. 

 

The B2B E-Commerce Challenge - Why ERP isn’t Enough

 

The world of B2B selling has always been one of nuance, based on personal relationships and negotiated pricing structures. Now, however, the same nuances remain while the influence of B2C seeps in. Your buyers want a digital experience that’s up-to-date with inventory and enables purchasing anytime, anywhere. 

According to Gartner, by 2025, 80% of all B2B sales interactions will happen digitally, underscoring the imperative for connected, real‑time systems such as ERP‑e-commerce integration to meet modern buyer expectations. 

But if your ERP and e-commerce site are not connected, you’ll never have real-time product inventory, and your digital experience won’t deliver the ROI you projected. 

What Goes Wrong When ERP and E-Commerce Are Disconnected

  1. Orders Get Stuck in Email or Spreadsheets
    E-commerce orders arrive via notifications, never automatically in your ERP. Staff must manually create sales orders, leading to typos, SKU mismatches, and delays.

  2. Pricing Discrepancies Erode Trust
    Your ERP knows the correct contract pricing, but e-commerce website tools are built for 1 to many pricing tiers. For B2B buyers, every discrepancy spawns negotiation calls.

  3. Overselling & Stockouts
    Without live stock updates, multiple web channels, portals, and partners draw from the same inventory pool. You could ultimately sell the same SKU to two customers in minutes, triggering backorders and angry calls.

  4. Process Inefficiency & Labor Drain
    Manual rekeying of orders, inventory reconciliations, and price corrections consumes staff hours that could be better spent on strategic initiatives.

 

What Is ERP Integration in B2B E-Commerce?

 

ERP integration is a two-way sync of data between channels and your back-end ERP. 

 

 That means:

  1. From ERP to E-Commerce:

    • Live stock counts flow into your website, portals, and marketplaces.

    • Pricing, discounts, and credit limits are published to buyer-specific storefronts.

    • Descriptions, specifications, and unit-of-measure conversions come from your ERP.

  2. From E-Commerce to ERP:

    • Online orders are created automatically as sales orders in your ERP.

    • New accounts sync back to the ERP.

    • Shipping confirmations and tracking numbers flow into portals..

With ERP integration, your e-commerce site becomes part of one unified ecosystem. Your channels are updated in real time, all using the same source of truth. 



6 Key Benefits of Connecting ERP to B2B E-Commerce

 

1. Live Inventory Sync

  • Prevent Overselling: Customers only see what’s truly available.

  • Complex Catalogs: For companies handling perishable goods or just-in-time manufacturing, accurate stock data is critical.

  • Multi-Warehouse Support: Sync stock levels by location so customers can select preferred fulfillment sites and lower shipping costs.

2. Customer-Specific Pricing Online

  • Reflect Contract Rates Immediately: As soon as pricing updates in your ERP, your storefront displays the correct pricing

  • Minimize Disputes: Show dynamic discounts at checkout to reduce calls about invoice adjustments.

  • Automate Promotions & Price Books: Run time-limited promotions directly from ERP promotion modules, with e-commerce pulling those rules live.

3. No More Manual Order Entry

  • Eliminate Typos & Mislabeled SKUs: With automated mapping, orders arrive in the ERP 100% accurately.

  • Speed Up Order Processing: From order placement to fulfillment readiness instantaneously, not hours or days.

4. Accelerated Order Fulfillment

  • Shorter Lead Times: By removing manual handoffs, fulfillment windows shrink.

  • Improved Customer Experience: Faster deliveries and proactive status updates drive repeat business.

5. Centralized Catalog Management

  • One Master Product Repository: Manage SKUs, descriptions, and costs in your ERP, then push updates outbound.

  • Multi-Channel Publishing: Sync the same catalog to your public site, private portals, marketplaces (Amazon, Walmart), and retailer EDI portals.

  • Consistent Branding & Info Quality: Ensure all channels reflect current specifications, regulatory content, and messaging.

6. Enhanced Executive Visibility

  • Unified Dashboards: Finance, sales, and operations leaders access a single dashboard showing total revenue, margin by channel, and order backlog.

  • Data-Driven Decisions: Spot top-performing channels, identify bottlenecks, and reallocate inventory in real time.

 

ERP & Ecommerce Integration Options

 

Option 1 - Accounting System + B2B Portal 

If you’re managing a smaller business, you might be able to stick with your accounting software and add an integrated B2B portal. If your budget is scarce and you’re having trouble deciding between upgrading to an ERP and implementing an eCommerce site, go for the latter. This will help expand your business and revenue to then invest in an ERP later. A B2B portal differs from an eCommerce site in being wholesale-focused as opposed to consumer-focused. Websites are a great way to market your products and sell directly to consumers, but if you only sell B2B, a portal provides pricing and customer features that aren’t available with ecommerce website builders. 



Option 2 - Accounting System + E-Commerce Site

For companies selling direct to consumers, an ecommerce website is your best bet. I you’re not ready to invest in an ERP, but still want your website fully integrated with your accounting system, consider a connector like our Shopify Order Management integration.




Option 3 - ERP + B2B Portal 

For mid-to-large-scale operations, an ERP will provide the modules you need to enhance your wholesale order operations. Adding an integrated B2B portal provides a discreet sales channel that pulls inventory from your ERP into your digital catalog. Customers can order anytime with real-time data pushed directly to your ERP. 

 

Option 4 - ERP + E-Commerce Site

For B2C sellers needing more robust modules than an accounting system, upgrading to an ERP and integrating with an ecommerce site is the best move. Just note that ERPs do not provide integration, and you will need a B2B ecommerce layer. 

 

ERP + B2B E-Commerce = Operational Maturity

Your B2B website or portal is the front door for your customers, and your ERP is the backbone that manages inventory and fulfillment. Connecting these critical systems transforms disconnected processes into a unified ecosystem.

If your B2B e-commerce site or portal isn’t yet connected to your ERP, you’re leaving margin. Discover how leading suppliers use  OrderEase to bridge the gap without costly custom builds.