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url: >-
  /flow/guide/administering-flow/configuring-flow/actions/action/action-steps-tab/custom-script-action.md
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# Custom Script Action

![](/flow/images/action-action-steps-custom-script-action-.jpg)

### Fields

| Field Name | Description |
|---|---|
| Active | Select to make this step active. You can skip this step by deactivating it |
| Source Type | Select the type of Data Definition you want to reference |
| Source Data | Select the Data Definition whose data will be available to in your custom script code. |

### Buttons

| Button Name | Description |
|---|---|
| [Design Custom Script](/flow/guide/administering-flow/configuring-flow/common-dialogs/script-editor/) | Click to open the Script Editor so you can provide the script code for this Action step. |