A customer list you can trust again.
A customer list goes wrong slowly. A duplicate here, a field nobody filled in there, until nobody quite believes the numbers and everyone keeps their own version on the side.
Signs the list has drifted.
The same customer exists three times, spelled three different ways.
Nobody trusts the reports, so everyone keeps a private spreadsheet.
Half the records are missing the one field you now need.
People who left years ago are still listed as the contact.
You cannot tell which customers are actually still customers.
Sending anything to the whole list feels too risky to try.
One customer, entered three times.
Matching on the name alone finds none of these. Matching on the phone number, the address and the order history finds all three, and nothing gets merged until you have said which version wins.
| In the system today | Contact on the record | Last order |
|---|---|---|
| Northgate Joinery Ltd | Jo Hall | March |
| northgate joinery | (312) 555 0147 | August |
| NORTHGATE JOINERY LTD. | J. Hall, accounts | June |
| Northgate Joinery Ltd | Jo Hall, (312) 555 0147 | August |
How we sort it out.
Nothing is deleted on a guess. Everything is copied first, and the judgement calls come to you.
Take a copy first
Before anything is touched, so there is always a way back to exactly how it was.
Find the duplicates
Matched on more than the name, because the same customer is rarely entered the same way twice.
Agree the rules with you
Which record wins when two disagree, and what counts as dead. Those are your decisions, not ours.
Merge and fill the gaps
Duplicates joined without losing history, and missing fields filled from whatever reliable source exists.
Set the dormant ones aside
Old records are parked rather than deleted, so the list is usable and the history survives.
Stop it happening again
The entry rules and checks that keep it clean, because a one-off cleanup drifts straight back.
Questions owners usually ask.
Will we lose any history?
Which systems do you work with?
How bad is too bad?
Can you keep it clean afterwards?
Do we have to stop using it while you work?
Tell us how bad the list has got.
Describe what is in there and what you no longer trust. We will come back with what it would take to sort out.