- Under the Integration tab click on the Additional Columns tab.
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Click on the Add Additional Column button.

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The Additional Column window opens.

- Name – enter a name for the column.
- Type – select Calculation.
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Additional fields are displayed in the window.

- Enter the required calculation in the script area. Standard scripting functionality is available within this window.
- The Source Columns and Global Variables sections can be expanded and contain columns and variables, respectively, that can be used in the calculation script.
- Select OK to save the script. The calculation column will now be available for mapping to destination fields.