 16x |
Conditional (see rule C1) in mandatory sequence A
This field contains the identification of the instruction to which the current message is related.
This field must not start or end with a slash '/' and must not contain two consecutive slashes '//' (Error code(s): T26).
When used, this field must contain the content of field 20 Sender's Reference of the previous MT 304 which is to be amended or cancelled by this message, or the reference of the telex/fax of the original confirmation.
