# Mapping one source field to one target field

The default mapping behavior maps one source field to one target field. For example, map the `Name` field to the `CustomerName` field.

Procedure

1. In the Source panel, navigate to the data field that you want to map from.

   You might need to expand a folder to see the data fields that it provides.

   When there are many source fields, you can search for the field of interest by entering the field’s name in the search field at the top of the Source panel.

2. Click to add the field as a source of a new mapping.

3. In the Target panel, navigate to the data field that you want to map to.

4. Click to add the field as a target in the selected mapping.

5. Optionally, preview the data mapping result. This is useful when you add a transformation to the mapping or when the mapping requires a type conversion.

   1. In the toolbar, click to display a text input field on the source field and a read-only result field on the target field.

   2. In the source field’s data input field, enter text. Click somewhere outside this text box to display the mapping result in the read-only field on the target field.

   3. Optionally, to see the result of a transformation, add a transformation in the Mapping Details panel.

   4. Hide the preview fields by again clicking .

6. Optionally, to confirm that the mapping is defined, in the upper right, click to display the defined mappings in a table.

   You can also preview data mapping results in this view. If preview fields are not visible, click and enter data as described in the previous step. In the table of defined mappings, preview fields appear for only the selected mapping. To see preview fields for another mapping, select it.

   Click to display the data field panels again.