 16x |
Mandatory in mandatory sequence A
This field specifies the related reference to the commodity deal.
This field must not start or end with a slash '/' and must not contain two consecutive slashes '//' (Error code(s): T26).
In a new contract, this field must contain the code NEW.
Where field 22 contains the code EXOPTION, this field must contain the field 20 Transaction Reference Number of the related MT 601 Commodity Option Confirmation.
In all other cases, this field should contain the field 20 Transaction Reference Number of the previous MT 600. The content of field 21, when other than NEW, will normally be a reference meaningful to the Sender rather than the Receiver. This is the case because the Sender will normally include the content of field 20 from the MT 600 or MT 601 previously transmitted rather than received.
