...
Though the candidate's legal entity, SSN and date of birth matches with the previous completed Form I-9 and record exists for the candidate in the HR database, the transaction may not be treated as a rehire case if the rehire date exceeds 3 year limit from the max hire date or if the termination date doesn't exists from the previous hire.
Also, the process switch might happen from Hire to Rehire, Rehire to Hire or Rehire to Rehire during restarts when correcting the wrongly entered SSN/Date of Birth. For more details, please refer to Rehires section.