In this guide 6 sections
The clearest signs are the same data typed into more than one system and decisions made on numbers a day or more old. A third sign is a recurring reconciliation task that exists only to catch mismatches between two systems. If staff can describe the workaround from memory, a connection is probably missing.
Duplicate entry, stale data and reconciliation
Consider a hardware distributor where an order is typed when the customer calls, again for the dispatch note, and a third time when accounts raises the invoice. Three people, three systems, one order. Each re-entry invites a typo, a wrong quantity or a price that differs from what the customer agreed, and the errors compound quietly.
Stale data is the second sign. The stock figure sales sees may be only as fresh as yesterday’s manual export, and the overdue-payments list accounts checks may be a spreadsheet someone updates on Fridays. Decisions then rest on stale numbers.
The third sign is reconciliation, such as someone tallying the CRM’s order count against the accounting system’s invoice count at month-end because the two should agree and do not. It is a symptom.
Mapping handoffs that depend on memory
The riskiest gaps depend on one person’s memory, because information moves from system A to system B only while someone checks both every day. It works until that person is on leave, busy or gone, and then it stops quietly, with no error message telling anyone.
Walk one transaction end to end. Write down every point where a human, not a system, carries information between places, since each is a candidate for an integration or a better process.
Measuring operational impact before acting
Not every gap deserves equal urgency, so for each duplicate-entry or handoff point, estimate how often it happens and how many errors or exceptions it produces each month. A handoff that happens twice a year and rarely fails can wait, while one that runs daily and regularly produces a wrong invoice is costing money now.
Volume settles the question. A business keying five orders a day into two systems may cope, whereas one keying two hundred cannot, and exception volume alone usually makes the case.
Separating an integration need from a bad process
Not every duplicate entry is a missing API, because sometimes two departments were simply never told to use one shared system, even though the software involved could cooperate well. If the fix is “stop keeping a second spreadsheet” instead of “connect two products”, you have a process change, which is usually cheaper and quicker than building an integration.
Ask whether the two systems need to exist separately, with different owners and different purposes, or whether one is an informal workaround for a gap in the other. Integration pays off only when both systems have a genuine reason to exist and both must show the same customer, order or stock facts at the same moment.
Prioritising a single reliable connection
Resist connecting everything to everything at once. Pick the one handoff with the highest frequency and the highest cost when it fails, and get it working reliably before starting the next. A distributor might start with sales-to-accounting, since a wrong invoice reaches a customer, and leave lower-volume supplier data syncing until the first connection has proved itself.
Staging limits the damage if the scope is wrong, because one failing connection is easy to pause and fix, whereas five built at once fail in five different ways. Go one at a time.
Integration opportunity scorecard
A scoring sheet lists each duplicate-entry or handoff point found in the walkthrough, scored on frequency (rare, weekly or daily) and on the cost of a failure. Costs run from a wrong invoice to a stock error or delayed dispatch, and the row highest on both scores is fixed first.
Open a blank worksheet to printQuestions owners ask
Should every system be connected?
Connecting systems that rarely exchange meaningful data adds maintenance cost without a real benefit, so integrate only where the same fact must live correctly in two places. Leave low-volume links manual for now.
Which integration should come first?
Start with the handoff that scores highest on both frequency and cost in your own walkthrough, which is usually the one that reaches a customer directly, such as order-to-invoice. Inconvenient internal links can follow.
How do we know it is not a process problem?
Ask whether the second system exists only because two teams never agreed to share one, and if it does, retire it before paying anyone to connect it. A spreadsheet is the usual culprit.
