B
Material release issuer
The responsibility for excess transportation is with the material release issuer.
S
Supplier authority
The responsibility for excess transportation is with the supplier authority.
X
Responsibility to be determined
The responsibility for the excess transportation is to be determined.
ZZZ
Mutually defined
A code assigned within a code list to be used on an interim basis and as defined among trading partners until a precise code can be assigned to the code list.