When the ENTER PIN & OK prompt appears:
1.  The cardholder keys in their Personal Identification number 
 (PIN) and presses the 
  key.
  key.
     Before pressing the 
  key, 
 the cardholder can press the
  key, 
 the cardholder can press the 
  key to correct 
 PIN errors or to go back to the previous customer prompt.
  key to correct 
 PIN errors or to go back to the previous customer prompt. 
2. Go back to the "Cardholder Prompts: Debit/Credit" procedure.