Allows you to explicitly include rows where an expression returns
true
. This differs from :ref:`Table Filters <rm-table-filters>`,
which filter based on an SQL query, and apply to all rows from a
particular table. Mapping rule filters only apply to a specific
mapping.
- On the :guilabel:`Mappings` pane, click the :icon-fa5:`chevron-left` icon next to :guilabel:`Advanced settings`.
- Select the :guilabel:`Add mapping rule filter` :icon-fa5:`check-square` icon.
- Enter a valid JavaScript filter expression in the :guilabel:`Value expression` text box.