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# Order action update fields

> Use this reference to view all the fields associated with the order action data dictionary.

Use this reference to view all the fields associated with the order action data dictionary.

> **Note**
>
> Fields with an asterisk mark indicate mandatory fields.

| Name              | Description                                                                                         | Value  |
| ----------------- | --------------------------------------------------------------------------------------------------- | ------ |
| Order Action Id\* | The ID of the Order Action to update, required when updating an existing Order Action record.       | String |
| Change Reason     | The reason for updating the Order Action.                                                           | String |
| Custom field      | The name of each custom field, which follows the format **customField\_\_c** and is case sensitive. |        |