Hi, I currently have my custom table "Contact Us Submissions" linked with my Recipients table using just the "email" field as seen here:
<element externalJoin="true" label="Contact Us Submissions" name="contactUsSubmissions"
target="cus:contactUsSubmissions" type="link" unbound="true">
<join xpath-dst="@email" xpath-src="@email"/>
</element>
I want make sure they are linked together by "email" AND another custom attribute, "brandOwner"
How would I make sure my table is linked together based on the combination of "email" and "brandOwner" attributes as reconciliation keys?