I am trying to merge two Contact records that are in the same Household, but I get an error message and cannot complete the merge. How do I resolve this error and complete the merge?
Full error text:
Merge failed. Merge failed. First exception on row 0 with id 003A0000002yMr8IAE; first error: DELETE_FAILED, cv.ContactAll: execution of BeforeDelete caused by: System.DmlException: Update failed. First exception on row 0 with id 003A0000002yMr8IAE; first error: SELF_REFERENCE_FROM_TRIGGER, Object 003A0000002yMr8IAE is currently in a merge operation, therefore a trigger can not update it.:  (cv) : 
The Salesforce ID referenced in the error is the Household account record.
This error can occur if there is more than one record that is marked as Head of Household in the merge group. For more information, please see this solution (BB750453).
If this is not the case, and there is only one record marked as Head of Household included in the merge, confirm that the Head of Household record is selected as the master record. If a non-Head of Household record is selected as the master record, the merge will not complete.