# Fill nulls transform


Fill nulls allows you to fill in null value in a column with a chosen fill value. Select a column with nulls you want to fill and provide a fill value. You can use multiple fill conditions at one time. Select a subset of the data to consider by using a dropdown menu to select columns.

**To add a Fill nulls node to your job diagram**

1. Open the menu and then choose Fill nulls to add a new transform to your job diagram.

1. (Optional) Click on the rename node icon to enter a new name for the node in the job diagram.

1. Modify the input schema:

   1. To create a subset, use the dropdown menu and select a column or columns to consider.

   1. To specify a value to fill nulls with, select "Add new fill null value", then choose a column to fill and provide a Fill value.

1. (Optional) After configuring the node properties and transform properties, you can preview the modified dataset by choosing the Data preview tab in the node details panel.

![\[The Amazon SageMaker Unified Studio UI showing the configuration options for the Fill nullss transform.\]](http://docs.aws.amazon.com/sagemaker-unified-studio/latest/userguide/images/vis-etl/vis-etl-fill-null.png)