A parameter is a placeholder for a value or values in a mapping. You can use a mask rule parameter when you configure a Data Masking transformation object in a mapping.
Use a mask rule parameter when you do not have the source connection information. You can also use a mask rule parameter when you want to assign masking techniques to source fields when you run the mapping task. For example, if the source transformation object in a mapping uses a parameter, you cannot assign masking techniques when you create the mapping. After you create a mapping with a source connection, you might add additional fields to the source that you want to mask. Use a mask rule parameter when you create the mapping. You can then create multiple tasks to mask different data based on the same mapping.
For more information about parameters, see Mappings.
Rules and guidelines for mask rule parameters
Read the following rules and guidelines before you use a mask rule parameter:
•You can add a single mask rule parameter to a data masking transformation.
•You can use a mask rule parameter only in the mapping that you create it in.
•If you add a mask rule parameter to a mapping, you select columns and apply masking techniques at runtime.
•If a mapping includes a source parameter, you must use a mask rule parameter. You can't apply masking techniques when you create the mapping because you don't know the source columns.
•At runtime, the Input Parameters tab appears only if you use a mask rule parameter in the mapping.