Settle ownership
Item by item, agreed by the departments involved, written down. Everything else depends on this being unambiguous.
CRM & ERP · Delhi NCR & remote
Two systems. One customer. Two spellings.
When sales and operations run separate systems, the same customer exists twice, the same order is entered twice, and month-end becomes an exercise in deciding which version to believe.
Short answer
CRM and ERP integration connects your sales system to your operational one so a won deal becomes an order without re-entry. The critical decision is not technical: it is deciding which system owns which data, and what happens when both have changed the same record.
One source of truth per record
Conflict rules decided first
No more double entry
Failures logged and alerted
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01 The premise
The question that must be answered first.
Every integration project has one decision that determines whether it works, and it is not a technical decision. For each piece of data — the customer record, the price, the stock level, the order status — which system is authoritative? If the answer is anything other than exactly one system per item, you have not designed an integration, you have designed a source of future disagreement.
The reason this gets skipped is that it requires departments to agree, and they frequently do not want to. Sales wants to edit the customer record because they speak to the customer. Operations wants to own it because they deliver to it. Both positions are reasonable and only one can be authoritative, so somebody has to decide.
Once ownership is settled, the technical work is comparatively straightforward: a one-way flow from the owner to the follower for each item, a conflict rule for the rare simultaneous edit, and logging so that failures are visible rather than silent. It is the organisational agreement that is the hard part, and it is why I insist on settling it before writing any code.
02 Data ownership
Deciding ownership, item by item.
A starting point. Yours may differ, and the point is that it is decided rather than assumed.
| Data | Usual owner and reasoning |
|---|---|
| Customer master record | Usually the CRM, because sales creates it first and maintains contact details. Operations reads it. |
| Product and price list | Usually the ERP, because it holds cost, stock and the commercial rules. The CRM reads current prices from it. |
| Stock levels | Always the ERP. Two systems believing they know stock is the most expensive ambiguity available in this kind of project. |
| Quotations | Usually the CRM, where the negotiation happens, until acceptance converts it into an order in the ERP. |
| Orders | The ERP once accepted. The CRM should read status rather than edit it. |
| Invoices and payments | The accounting system, always. The CRM reads status so sales can see who has paid. |
03 Requirements
What a durable integration includes.
Beyond making the data move once in a demonstration.
Requirements
- One-way flows per item. Owner to follower. Two-way synchronisation should be used only where genuinely required, because it is where conflicts live.
- A stated conflict rule. When both sides changed the same record, what wins. Decided in advance, never resolved by whichever update arrived last.
- Idempotent processing. The same event arriving twice must not create two orders. Systems retry, and duplicates are the classic failure.
- Retries with backoff. Systems go offline. A failed transfer is retried rather than lost, with increasing gaps.
- Error logging and alerts. Somebody is told when it fails repeatedly. Silent failure is how integrations quietly stop working.
- A manual re-run. A way to push a record across by hand when something has gone wrong, without waiting for a developer.
- A reconciliation report. A periodic check that both systems agree, so drift is found in days rather than at year end.
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Which system is right when they disagree?
If there is no agreed answer for each record, that is the finding — and it is an organisational decision rather than a technical one. Tell me your systems and I will map what needs settling.
- Ownership mapped before any code
- You keep the findings either way
- Failure handling designed in
- Same-day reply, all 7 days
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04 Process
How it gets built.
Check what is possible
What each system’s API actually supports, its rate limits and its authentication. Occasionally this changes the plan.
Build one flow
The highest-value one first, usually won deal to sales order. Prove the pattern before extending it.
Test the failures
Timeouts, duplicates, malformed data, wrong credentials. Each exercised deliberately rather than hoped about.
Monitor and reconcile
Alerting on repeated failure and a periodic report confirming the two systems still agree.
— CRM & ERP
Related services.
These sit next to CRM and ERP integration and are usually bought with it. Same person doing the work in each case.
— Questions
CRM and ERP integration — your questions.
Straight answers, including the ones that cost me work. If yours is not here, ask it — I reply the same day.
Data flows between them according to agreed ownership: typically the CRM owns the customer and the quotation, the ERP owns products, stock and orders. A won deal becomes a sales order automatically, and the CRM reads back status so sales can answer questions without asking operations.
That is why ownership must be decided before anything is connected. One system is authoritative for each field, the other reads it. Where a genuine two-way flow is needed, a conflict rule is agreed in advance rather than being settled by whichever update happened to arrive last.
Sometimes, through scheduled file exchange or a direct database connection where you control it. It is less reliable than a proper API and needs more careful failure handling. I will tell you honestly which situation you are in before committing.
A single one-way flow between two well-documented systems is often days. Multiple flows with two-way synchronisation take longer — and most of that time is spent agreeing rules and testing failure cases rather than writing the transfer itself.
It should log the failure, retry with increasing gaps, and alert somebody if it keeps failing. There should also be a way to re-run a transfer by hand. An integration without those three things will eventually fail silently, which is worse than not having one.
For the flows that are integrated, yes. Some manual entry usually remains where a process genuinely starts outside both systems. The realistic goal is eliminating the repeated typing of data that already exists digitally, which is where the cost actually sits.
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Decide who owns what, then connect it.
Tell me which systems you run and where the same information gets typed twice. You will get an ownership map and an honest scope for connecting them.
- Ownership settled before any code
- One-way flows wherever possible
- Failure handling and alerts built in
- Fixed price agreed before work starts
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