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Will rerunning a table create duplicate companies in HubSpot?

April 2026

Quick Answer

## Rerunning Tables in HubSpot **Clay** will not create duplicate companies when rerunning a table, provided the same identifiers are used. ### How it Works - Clay matches against existing companies using unique identifiers (such as domain) - If a company already exists from a previous run, Clay will skip creation and use the existing record instead ### When Duplicates Occur Duplicates are created only when identifiers change between runs: - Different domains used in separate runs - Missing domain data on subsequent runs - Multiple "create company" steps without a match condition applied

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1 Answer

Rerunning Tables in HubSpot

Clay will not create duplicate companies when rerunning a table, provided the same identifiers are used.

How it Works

  • Clay matches against existing companies using unique identifiers (such as domain)
  • If a company already exists from a previous run, Clay will skip creation and use the existing record instead

When Duplicates Occur

Duplicates are created only when identifiers change between runs:

  • Different domains used in separate runs
  • Missing domain data on subsequent runs
  • Multiple "create company" steps without a match condition applied
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