Remove Duplicates from Supplier and Vendor Database Records
✓ TestedWorks with CSV, Excel, Google Sheets → JSON-LD Schema
By dataclean.to team · 2026-02-12
Procurement teams manage vendor records across ERP systems, AP platforms, supplier portals, and department-level spreadsheets. The same supplier gets entered multiple times when different departments onboard them independently, when the vendor's legal name differs from their trading name, or when a supplier is re-onboarded after a period of inactivity. 'Acme Supply Co.', 'ACME Supplies Inc.', and 'Acme Supply Company LLC' may all be the same vendor with three separate records in your AP system. dataclean.to matches supplier records by company name, tax ID, address, and banking details to consolidate your vendor master.
The Problem
Duplicate vendor records in procurement data are one of the most financially impactful data quality issues an organization faces. Each duplicate bypasses spend consolidation, preventing the company from reaching volume discount tiers with a supplier they are already buying from at scale. AP teams processing invoices against different vendor records for the same company may issue duplicate payments, a common source of financial leakage. Tax reporting to the IRS via 1099 forms becomes inaccurate when payments to the same vendor are split across records, potentially under-reporting total payments and triggering compliance issues. Vendor risk assessments and compliance checks applied to one record but not the other leave the organization partially unscreened. IRS Form 1099-NEC reporting requirements
How to Fix It
1
Export vendor master data
Pull supplier records from your ERP, AP platform, and procurement system into CSV format. Include vendor name, tax ID (EIN/TIN), address, primary contact, payment terms, bank routing information, and the department that onboarded them.
2
Upload to dataclean.to
Upload the CSV. The tool compares vendor names, tax IDs, addresses, and contact details to identify suppliers that exist as multiple records across your procurement systems.
3
Review duplicate vendor clusters
Examine flagged groups. Common duplicates include the same company under legal and DBA names, subsidiaries of the same parent entered independently by different departments, and vendors re-onboarded after inactivity without checking for existing records.
4
Consolidate into a clean vendor master
Merge confirmed duplicates into single vendor records. Retain the verified tax ID, current banking details, the correct payment terms, and the combined purchase history and spend total from all source records.
5
Export the clean vendor database
Download the deduplicated data for import into your ERP and AP systems. A clean vendor master enables accurate spend analysis, consolidated purchasing for volume discounts, and compliant 1099 reporting.
Frequently Asked Questions
How does the tool handle subsidiaries of the same parent company?
Subsidiaries sharing a parent company name or address are flagged as related entries. You decide whether to merge them into one vendor record or keep them as separate entities linked to a parent, depending on your procurement and accounting structure.
Can it detect vendors with the same tax ID under different names?
Yes. Two vendor records sharing the same EIN or TIN but entered under different company names are flagged as duplicates. This is one of the most reliable indicators of a true duplicate in vendor data.
What about international suppliers with no US tax ID?
For international vendors without a TIN, the tool matches on company name, address, and contact details. Records sharing the same foreign address and similar company names are flagged for review even without a tax ID match.
Example: Input → Output
name
email
phone
city
status
Alice Johnson
alice@example.com
+1-555-0101
New York
active
alice johnson
ALICE@EXAMPLE.COM
5550101
new york
Active
Red rows show common data quality issues. dataclean.to normalizes and generates JSON-LD automatically.