> For the complete documentation index, see [llms.txt](https://help.dataimporter.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.dataimporter.io/formatting/replace-null-values.md).

# Replace Null Values

By default, when updating existing Salesforce records, where the data is populated in Salesforce e.g. email, and the source data has a blank value, Salesforce will simply ignore the update. By selecting this option, the Blank values will be accepted by Salesforce, and the field data will be deleted.

<figure><img src="/files/b5p4weJqSsBhOidVq24J" alt=""><figcaption></figcaption></figure>

This is only available for Upsert and Update operations.