Processes | Expression Parameters | Columns by Which to Merge with Input SAS Data Set

Columns by Which to Merge with Input SAS Data Set
Use this field to specify those variables used to match and merge profiles with the input data.
To Specify One or More Merge Columns:
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All of the variables in the batch profile input data set are displayed in the Available Variables field.
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Click to add the highlighted variable(s) to the Columns by which to merge with Input SAS Data Set field, as shown below: