Data check / duplicate check
Send your data file — we check every row, find duplicates and fix wrong formats so the data is ready to use
- Every item checked by our team
- Per-unit price, known before we start
- Revisions within the agreed rounds
What this service covers
- Duplicates found, e.g. the same customer spelled differently
- Phone, email, postcode and date formats checked
- Wrong formats corrected to your rules
- A result for every row: OK / duplicate / invalid / fixed
- Sales teams with customer lists from many sources
- Businesses migrating data into a CRM or ERP
- Marketing teams cleaning lists before a campaign
What you send us
- Data to checkRequired
- Checking ruleOptional
We'll send you a template once the quote is confirmed
What you get back
- A result for every row, with its duplicate partner
- Corrected values in a separate column, beside the original
- A summary count of duplicates and invalid rows
Sample work
Made-up data showing what goes in and what comes back
Row 12: Siam Panich Co., Ltd. | 081-234-5678
Row 48: Siam Panich Company Limited | 0812345678
Row 51: DD Shop | 02-123-456
| Row | Result | Note |
|---|---|---|
| 48 | Duplicate | Same as row 12 |
| 51 | Invalid | Phone number too short |
How the work runs
Four steps from brief to ready-to-use files
- 1Send the work and quantitySend the data file, your checking rules (e.g. what counts as a duplicate) and the number of rows
- 2Get a quote and payA clear price before we start. Confirm, pay the deposit and send your files
- 3Our team works and checksOur team checks each row against your rules, marks duplicates and fixes values, then QA re-checks a sample
- 4Receive the work, revise by roundsGet ready-to-use files, review them and request revisions within the included rounds, then pay the balance
What we check
Every item has to meet these criteria before it reaches you
- Every rule you set is applied
- Duplicates always point to their matching row
- Corrections go in a separate column, never over your data
Pricing
Price per unit × quantity — known before we start, no hidden costs
| Package | Price per unit | Revisions | Estimated time |
|---|---|---|---|
| StandardEach row checked for errors and duplicates | ฿0.80 / row | 1 round(s) | 3 day(s) |
50% deposit before work starts, balance after acceptance
Estimate only — the final price is confirmed in your quote
Frequently asked questions
Do you delete the duplicates?
We mark them and point to the matching row so you decide what to remove — nothing is lost by accident.
How is this different from a duplicate formula in Excel?
Formulas only catch exact matches. Our team also catches variations in spelling, abbreviations and spacing.
Is our customer data safe?
Everyone on the team has signed an NDA, only sees the files for their assigned work, and handles data in line with the PDPA.
Got this kind of work piling up?
Tell us the quantity and deadline — our team replies with a quote. Free, with no commitment