| Option S | 3!n 6!n [4!n6!n] |
(MT Number) (Date) (Session Number)(ISN) |
This field specifies the message type number of the message which contained the transaction to be cancelled and the date on which this message was sent.
Date must be a valid date expressed as YYMMDD .
MT Number must be a number in the range 100 - 999 .
Session Number and ISN (input sequence number) of the original message, if available, must be present in subfield 3.