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title: Perform a Partial Update on an Existing Record
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---
# Perform a Partial Update on an Existing Record

You can perform partial updates on previously ingested records using streaming Ingestion API.

Before you begin:

- Make sure you set the Refresh Mode to be Partial in the Data Stream. To know how to enable partial update, see [Create an Ingestion API Data Stream](/docs/data/data-cloud-int/guide/c360-a-create-ingestion-data-stream.html).

To perform a partial update, include the record’s Primary Key in your request, provide a value for the Record Modified field, and specify the fields you want to update. Data 360 updates only the fields included in the payload and leaves the other fields unchanged.

A record can only be partially updated if the request is made to the streaming endpoint for Ingestion API. Data 360 will process records in a bulk ingestion job as if the Refresh Mode was upsert. This means that the fields for which there are no values will be made null.