Table of Contents
Issue #
While attempting to merge two leads, the system displays the error:
“Leads cannot be merged as child lead/s are referenced in one or more activities of lead type field.”
RCA: #
On reviewing the lead activities, it was identified that one of the activities on the lead contains a Custom Field Set (CFS) field of Lead Data Type (e.g., Lead Link).

Using Advanced Search, two leads were retrieved where the parent (merging) lead was referenced in this Lead-type field.

Since the lead being merged is actively referenced by other leads activities, the merge operation is blocked to preserve data integrity.
Corrective Action: #
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Edit the impacted activity on the identified leads and remove or update the Lead Data Type field so it no longer references the parent lead.
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If the activity is not required, delete the activity to clear the dependency.
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Once the reference is removed, retry merging the leads.
