CRM and ERP side by side
The quickest way to tell them apart is to look at the order: the CRM works until it exists, the ERP works from it onward.
| Criterion | CRM | ERP |
|---|---|---|
| What it's for | Organizing and running the sale: lead, opportunity, pipeline, follow-up | Running and controlling the company: orders, inventory, invoices, finance |
| Question it answers | How much will we sell, and where do deals get stuck? | How much did we sell, bill and have in stock? |
| Who uses it day to day | Sales, pre-sales, customer service and marketing | Finance, tax, purchasing, logistics and production |
| Moment in the sale | Before the order: from first contact to close | After the order: billing, delivery and collection |
| Core data | Contacts, conversations, pipeline stages and forecast | Products, prices, inventory, invoices and ledger entries |
| When it's missing, the symptom is | Unanswered leads, forgotten follow-ups, forecasts based on guesswork | Tax errors, stockouts, cash flow out of control |
| Order it usually arrives in | Later, when sales becomes the bottleneck | First, because issuing invoices requires a management system |
Which to implement first
If the company still has no way to issue invoices, control inventory and close the books, the ERP comes first — it's the foundation the operation needs in order to exist. If the ERP is already in place and the problem is before the order, the answer is a CRM.
Signs that the bottleneck is in sales, not in operations:
- Leads that come in through WhatsApp or the website sit for hours without a reply
- Nobody can say how many deals are open or at what stage
- Follow-up depends on the sales rep's memory
- The monthly sales forecast is the manager's estimate, not a number from the system
- When a sales rep leaves, their customers leave too
When to integrate CRM and ERP
Integration becomes worth it when the same information starts getting typed twice. The most common signs: the sales rep retypes the order into the ERP, can't see inventory, price or credit limit while negotiating, and nobody can say how much revenue came from each channel.
With integration, customer, product, price and inventory flow down from the ERP to the CRM; the closed order flows up from the CRM to the ERP; and billing and delivery status flows back to the CRM, so the sales rep can follow the customer without asking finance.
Does an ERP with a CRM module do the job?
Sometimes, yes. Many ERPs have a CRM module, and it's usually enough when the sale is simple: few sales reps, a short cycle, little contact before the order. In those cases, one more system just adds cost and one more place to keep up to date.
The module usually falls short when the sale happens in conversation — especially on WhatsApp —, has several stages before the order or depends on disciplined follow-up. What's missing then isn't a customer database, it's a pipeline, conversation history and automation, which are at the core of a CRM and on the periphery of an ERP.
How Nexo works with both
Nexo implements CRMs based on the sales process and integrates them with the ERP the company already uses, instead of replacing it. CRPRO is Nexo's own AI-powered CRM for WhatsApp, and SmartOrders reads the ERP to forecast demand and prioritize purchasing and inventory.