The verdict in three sentences
For a Toronto distributor of electrical supplies, a B2B webshop that does not talk to SAP Business One creates more work than it removes: wrong net prices, stock out of sync, credit limits ignored and orders re-keyed. A connector covering the 6 main flows costs 18,000 to 45,000 CAD with an agency (market estimate), versus 700 to 2,000 CAD a month for an off-the-shelf middleware, with an 8 to 12-week timeline. On the Kolonell grid, the connector sits between 4,000,000 and 7,000,000 FCFA (6,100 to 10,670 EUR) for a standard scope, and Premium maintenance costs 120,000 FCFA (180 EUR) a month.
The 6 flows to sync and the errors they prevent
Each flow has a direction, a frequency and a clearly identified error type when handled by hand. The figures below are 2026 orders of magnitude for a distributor handling 2,500 online B2B orders a month.
| Flow | Direction and frequency | Typical error without a connector | Errors avoided per month |
|---|---|---|---|
| Items and specifications | SAP B1 to webshop, daily | Missing SKU or outdated product sheet | 40 to 60 |
| Net prices and customer discounts | SAP B1 to webshop, hourly | List price shown to a contract customer | 60 to 90 |
| Stock by warehouse | SAP B1 to webshop, every 5 to 15 minutes | Sale of an out-of-stock item | 80 to 120 |
| Balance and credit limit | SAP B1 to webshop, hourly | Order accepted on an account on hold | 10 to 20 |
| Orders | Webshop to SAP B1, real time | Re-keying, wrong quantity or address | 50 to 75 |
| Invoices, credit notes and delivery status | SAP B1 to webshop, daily | Customer calling for a copy or tracking | 150 to 250 calls |
The most profitable flow is often net prices: an electrician who sees the list price instead of their negotiated rate calls, complains or goes to a competitor. The most sensitive flow is stock, because a stockout found after the order costs a call, a credit note and sometimes the customer.
Custom connector or off-the-shelf middleware
SAP Business One exposes its data through the Service Layer REST API and the older DI API, which makes both approaches possible. The choice depends on volume, how specific your pricing rules are and the 3-year cost.
| Criterion (2026 order of magnitude) | Off-the-shelf middleware | Custom connector |
|---|---|---|
| Upfront cost | 3,000 to 12,000 CAD of configuration | 18,000 to 45,000 CAD with an agency (market estimate) |
| Recurring cost | 700 to 2,000 CAD a month | Maintenance 120,000 FCFA (180 EUR) a month at Kolonell |
| 3-year cost | 28,000 to 84,000 CAD | 28,000 to 55,000 CAD with an agency |
| Complex pricing rules | Limited to vendor-supported cases | All SAP B1 price lists and special prices |
| Time to go live | 4 to 8 weeks | 8 to 12 weeks |
| Dependency | On the middleware vendor | Code delivered, documented, reversible |
| Flow monitoring | Standard dashboard | Alerts on each failed flow |
Middleware suits a simple catalogue with few discount rules. As soon as conditions by customer, product family and quantity multiply, as is common in electrical supplies, custom becomes cheaper from the second year onward.
Mini case study
Illustrative example: Ryan, IT director of an electrical supplies distributor in Toronto, handles 2,500 online orders a month, currently re-keyed into SAP Business One by 2 assistants.
- Re-keying: 2,500 orders × 6 minutes = 250 hours a month, about 1.6 FTE at 58,000 CAD fully loaded a year, so 92,800 CAD a year.
- Errors: 290 errors a month × 50 CAD average cost (call, credit note, redelivery) = 174,000 CAD a year.
- With the connector, assume an 80% cut in errors and 0.3 FTE of remaining checks: savings of about 139,200 + 75,400 = 214,600 CAD a year.
- Project at 9,000 EUR on the Kolonell grid plus 2,160 EUR of annual maintenance: paid back in under a month of operation.
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FAQ
How much does it cost to integrate a B2B webshop with SAP Business One?
With an agency, a custom connector covering 6 flows costs 18,000 to 45,000 CAD (2026 market estimate). On the Kolonell grid, it sits between 4,000,000 and 7,000,000 FCFA (6,100 to 10,670 EUR) for a standard scope.
How long does it take?
Allow 8 to 12 weeks: 2 weeks analysing SAP B1 rules, 5 to 7 weeks of development, then 1 to 3 weeks of parallel running alongside the old process.
Do we need to go through our SAP partner?
Their input helps to enable the Service Layer and check access rights, usually 1 to 3 days of work. The connector itself can be built by another team as long as the interfaces are documented.
What happens if SAP Business One is down?
Orders stay queued on the webshop side and go through as soon as the service is back, with no loss. An alert is sent if a flow fails for more than 15 minutes.
What maintenance should we plan for?
Kolonell maintenance ranges from 35,000 to 120,000 FCFA a month (50 to 180 EUR). For a business-critical ERP connector, the Premium level at 120,000 FCFA (180 EUR) covers flow monitoring and adjustments after each SAP B1 update.
Let's scope your project. List your flows, your SAP Business One version and your pricing rules: we will price your connector in the 4,000,000 to 7,000,000 FCFA range (6,100 to 10,670 EUR), delivered in 8 to 12 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
