# Specify the parameter in Transformation properties

Perform the following steps to specify the parameter in PDI using the **Transformation properties** dialog box.

1. Double-click anywhere on the transformation canvas.

   The **Transformation properties** dialog box appears.
2. Click the **Parameters** tab and enter the following information:
   1. In the **Parameter** column, type `spark.hadoop.validateOutputSpecs`.
   2. In the **Default Value** column, type `false`.
   3. (Optional) Add a descriptive note about why the parameter is included.
3. Click **OK** to activate the parameter.

   You can verify it is active in the transformation logging.

For more information about processing Spark parameters, see the **Administer Pentaho Data Integration and Analytics** document.


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