You can select a rule from a list based on the data type of the source field. If some of the fields are different in source and target, the common fields are listed. The fields pick up the attributes, such as length, field type, and label, from the target connection.

When you select multiple source objects, the task lists fields from a single object at a time on the

Masking

page. Select the source objects individually if you want to apply masking rule to fields in different objects.

After you apply masking rules, you can configure masking rule properties. For each masking rule, you can configure preprocessing and postprocessing expressions.

You cannot apply masking rules to read-only objects.