Set up merge suggestions
- For the first source system whose persons will be merged, Map an additional field for the Aggregation attribute, as a person field. This will typically be a Complex (JavaScript) mapping. A default script is provided, but you should customize it as needed. See Aggregation value script.  
- Click New Snapshot to apply the mapping to your persons. 
- Repeat steps (1) - (2) for all other source systems whose persons you want to merge. 
- Go to Source > Aggregation > Configuration. 
- Enable the Enable Aggregation Suggestions toggle. 
- Optional: Adjust the Suggestion Matching Score. 
- Optional: Adjust the Max Matching Persons. 
- Click Apply. 
- Optional: Select a person to preview and click Preview. Suggested persons are shown, including scores and - aggregationstrings. 
Merge suggestions are now configured. The next step is to Resolve merge suggestions as you receive them.