Hi all,
We are facing an error when doing a merge to some of our Leads. The issue has been around for couple of weeks. I do not know exactly when this has started.
So when we do a merge to leads, it stops to an error
Duplicate Record
A record that has the attribute values {1} already exists. The entity key {0} requires that this set of attributes contains unique values. Select unique values and try again.

When I use browsers developer tools I get more detailed error but i can not fix the issue.
[storage] Error Messages:
1: A record that has the attribute values Lead, Lead scoring model already exists. The entity key LeadModelKey requires that this set of attributes contains unique values. Select unique values and try again.
The issue seems to be with Leads that have been scored because not all Lead merge give this error.
Any idea how we can make the Lead merge to work again?