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Expand the area on the left, and the Target column on the right, as shown in the screenshot.
You can now drag and drop fields from the area on the left into the Source column, to specify how fields will be mapped to the Target column.
When you are done, press “Save mappings” and then save the workflow.
About types
The fields will have types specified (as defined in the block models) which will prevent for example a string to be mapped directly to a number field:
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This can be solved either by changing If you need to map fields of different types you can either:
Change the field type in the mapping screen (the little pencil icon on the field)
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Change the block model
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definition
Apply a function in the Mapper block to transform the field type
Here is an example where the zip code field has a string type in the source model, but a number type in the target model:
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To fix this we must change the data type for this field, by clicking the pencil icon.
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You are now able to map the Source zip field to the Target zip field.
Save the mappings, and then save the workflow.
See the following article for more information about types: Mapper types