This option displays a management
report that shows the check digits string associated with the currently
loaded master and working keys (MAC and/or PIN as applicable).
This is used to confirm
that the key was entered correctly. The processor can provide a set
of check digits for reference purposes. If the digits displayed in
the report are different from the reference set, the MAC and/or PIN
Master Keys may be invalid or corrupted. Contact the processor for
assistance if necessary.