How to get your e-commerce business Black Friday-ready with Business Central as your single source of truth

Picture Monday 30 November. Cyber Monday. Your alarm goes off and the sleep is still in your eyes. You shuffle to the kitchen and pour yourself a black coffee, strong enough to stand a spoon in. You’ve earned it. All weekend, the orders went through the roof. You worked late, answered messages from the sofa and watched the sales counter climb. 

But as the mug warms your hands, the to-do list comes into focus. A customer asks where their parcel is. Stock on your website doesn’t match the shelves in the warehouse. Three products sold out twice. And somewhere in a pile of exports sit orders that still need to go into Business Central by hand. For a moment, everything goes black. And not in the Friday way. 

If that sounds familiar, you’re not alone. Peak moments don’t create new problems. They switch on the lights, and suddenly you see every crack. 

Black Friday should put you in the black, not leave you seeing black. Whether you run the business or you’re the ERP or IT manager responsible for Business Central, the next two weeks decide how your peak season feels: a smooth run, or a long and sleepless night. 

In short 

• Black Friday 2026 is on 27 November, with Cyber Monday on 30 November. 
• During a peak, Business Central as your single source of truth prevents overselling, order backlogs and pricing errors. 
• After Black Friday, returns, Sinterklaas, Christmas and the year-end close leave little room to fix problems. 
• Two weeks is enough to remove the biggest bottlenecks, if you keep the scope tight. 

When is Black Friday 2026? 

Black Friday 2026 falls on Friday 27 November, followed by Cyber Monday on 30 November. That gives you two weeks from today. Not enough for a full system overhaul, but enough to fix the bottlenecks that cost you the most time. 

And for many businesses, the peak doesn’t stop on Monday. Black Friday has grown into Black Week or even Black November, with promotions spread over several weeks. Your systems need to keep up for longer than one weekend. 

Why a single source of truth matters at peak moments 

A single source of truth means there is one place where your product, stock, customer and order data is correct, and every other system follows it. For most e-commerce businesses using Business Central, that place is the ERP. 

On a normal day, small differences between your webshop and Business Central are annoying but manageable. Someone spots a stock mismatch and corrects it manually. During Black Friday, the volume makes that impossible. A few things happen at once: 

• Overselling. If stock updates lag behind across your webshop and marketplaces such as bol or Amazon, you sell products you no longer have. That leads to cancellations, refunds and disappointed customers. 
• Order backlogs. When orders reach Business Central manually or in slow batches, your warehouse can’t start picking. Delivery promises slip. 
• Pricing errors. Promotional prices that are set in one system but not the other cause margin loss or confused customers. 
• Customer service overload. When nobody trusts the data, every question about an order or invoice needs someone to look it up in two places. 

With one source of truth, your team spends the busiest week of the year on customers and logistics, not on checking which system is right. 

Why there’s little room to fix things after Black Friday 

The weeks after Black Friday are not a quiet window to solve problems. They’re the start of the busiest stretch of the year. 

• Returns from Black Friday start coming in, and each return needs to be processed in both your webshop and Business Central. 
• Sinterklaas (Saint Nicholas) is a Dutch and Belgian tradition on 5 December, when families exchange gifts. It’s a major shopping moment, with order peaks in the days before. And the old saint doesn’t move his deadline for anyone. 
• Christmas brings the next wave, with tight delivery deadlines and customers who expect their parcel on time. 
• New Year’s Eve and the year-end close follow straight after. Your finance team needs correct order, invoice and stock data to close the books. 

Any issue that appears on Black Friday will stay with you until January. Every manual workaround you start in November, you’ll repeat through every peak that follows. That’s why the time to fix your processes is now, before the volume arrives. 

Your options to prepare in the next two weeks 

There’s no single right approach. It depends on how your webshop and Business Central work together today. Here are the three most common routes. 

Option 1: Extra hands (and extra coffee) for manual processing 

You keep your current way of working and plan extra staff to enter orders, update stock and answer customer questions. 

• Pros: No changes to your systems. Quick to arrange. 
• Cons: Costly per order and error-prone under pressure. It doesn’t scale, and the problem returns at every next peak. 

Option 2: Optimise your existing integration 

If you already have a connector between your webshop and Business Central, check whether it’s ready for higher volumes. Look at sync frequencies, error handling and how stock is calculated. 

• Pros: You build on what already works. Often a matter of configuration rather than development. 
• Cons: Only possible if your current integration is stable. Changes need testing before the peak, not during it. 

Option 3: Implement a Business Central connector now 

If orders and stock still move between systems by hand, a standard connector automates the data flows between your webshop or marketplace and Business Central. 

• Pros: Removes the manual work for good. A standard connector can go live quickly, because the core integration doesn’t have to be built from scratch. 
• Cons: Needs a focused implementation and proper testing. With two weeks left, it only works with a clear scope and a partner who knows Business Central well. 

Is two weeks enough? A recent example 

It can be. We recently went live with a customer within one week. We’ll share the full story in a customer case soon. 

A go-live that fast is possible when the core integration doesn’t have to be built from scratch. With a standard connector as the foundation, the work shifts to configuration, testing and quick decisions on both sides. 

The lesson for your Black Friday preparation: a short timeline is manageable when you limit the scope to what matters most for the peak, and leave the nice-to-haves for January. 

A practical checklist for the next two weeks to prepare your webshop for Black Friday

This checklist is for the last two weeks: what to decide, check and freeze before the peak. 

1. Map where manual work happens. Follow one order from webshop to delivery and invoice. Note every step where someone copies, exports or checks data by hand. 
2. Check your stock sync. How often does stock move from Business Central to your webshop? During a peak, every minute of delay increases the risk of overselling. 
3. Set promotional prices in one place. Decide which system leads for prices and discounts, and make sure the other follows. 
4. Test with realistic volumes. Place test orders, including discounts, multiple shipping methods and a return. Read more in our blog on why you should test your integration before going live. 
5. Agree on a fallback. Make one person responsible for monitoring your integration over the Black Friday weekend. Agree what happens if a sync fails, and how your team will notice. 
6. Freeze changes before the peak. Plan the last change to your integration at least a few days before 27 November. Anything after that waits until January. 
7. Plan for returns and the year-end close. Make sure returns and credit memos flow back into Business Central, so your finance team starts January with correct numbers. 

Spotting more manual steps than you’d like? Then it might be time to take them out of the process altogether. With a connector between Business Central and your webshop, orders, stock, prices and returns flow between both systems automatically. No more copying, exporting or double-checking, on Black Friday or on any ordinary Tuesday. 

Tinx builds these connectors for the leading e-commerce platforms and marketplaces. And you won’t be talking to a chatbot: our consultants help you set it up the way your business works. Curious whether it’s still possible before Black Friday? Plan a call with one of our consultants. 

Conclusion: Black Friday is a stress test, not a one-off 

Black Friday on 27 November is the start of a peak season that runs through Sinterklaas and Christmas into the year-end close. Without a single source of truth, every manual step multiplies with the volume, and there’s little time to fix things once it starts. 

But the real value of preparing isn’t one smooth weekend. Whatever you automate now keeps working on every busy day that follows. Black Friday simply shows you where your processes break first. The businesses that handle it calmly aren’t the ones with the biggest team, but the ones whose systems already work together. On their Cyber Monday, the coffee is just coffee, not a survival strategy. 

Frequently asked questions 

When is Black Friday 2026? 

Black Friday 2026 is on Friday 27 November. Cyber Monday follows on Monday 30 November. 

How do I prepare my Business Central integration for Black Friday? 

Check how often stock and orders sync between your webshop and Business Central, test with realistic order volumes, set prices in one leading system, and stop making changes a few days before the peak. 

What is a single source of truth in e-commerce? 

It’s one system where your product, stock, customer and order data is always correct, with every other system following it. For businesses using Business Central, that’s usually the ERP. 

Can I still implement a connector before Black Friday? 

With a standard connector, a clear scope and fast decisions, a go-live within one or two weeks is possible. Keep the scope limited to what matters most for the peak and plan extras for later. 

Why is it hard to fix integration problems after Black Friday? 

Because the peak continues. Returns, Sinterklaas, Christmas and the year-end close follow straight after, leaving little time to change systems without risk.