How do you add additional match identifiers while configuring match attributes for Duplicate Identification?

You can't add any additional match identifiers while configuring Match Attributes for Duplicate Identification.

Here is a work around to add any additional match identifiers while configuring Match Attributes for Duplicate Identification. Navigate to Manage Enterprise Data Quality Matching Configurations setup option and copy or edit an existing configuration.

In the Match Attributes section, perform the following steps:

1. Select a row to edit the mapping, and click the drop-down button for the selected row.
2. Select the relevant attribute from the list.
3. If the list doesn't display the attribute that you want for the mapping including published custom fields, then click Search to search for the attribute. Select the relevant option and click OK.
   Note: To identify duplicates based on a custom field search the custom attribute in the Account attribute drop-down and then map it to any available unused EDQ attribute.

4. Select the relevant option and click OK.

5. Click Save.