Try each of the following steps in order until the error is resolved:
 

    • Ensure the record to be merged is a constituent record and not an individual or organization. If it is an individual or organization record, convert the records so that both are the same type
       
    • Login as Supervisor or as a user with rights to constituents to be able to complete the merge
       
    • Make sure the name is spelled correctly in the search fields
       
    • Remove additional search criteria such as category and date created. Mark the Display inactive constituent and Display deceased constituents checkboxes