The Return Result component

Return Result Component        Mandatory indication
Component Type Tag             Mandatory                 1 0 1 0 0 0 1 0
Component length 1)
Invoke ID Tag                  Mandatory
Invoke ID length
Invoke ID
Sequence Tag                   Optional a)
Sequence length 2)
Operation Code Tag             Optional a) 4)

Operation Code length          Optional a)
Operation Code 3)
Parameters (Note 5)

a)      Omitted when no information elements are included the parameters.
NOTE 1 - The component length is coded to indicate the number of octets contained in the component (excluding the component type tag and the component length octets).
NOTE 2 - The sequence length is coded to indicate the number of octets contained in the sequence (excluding the sequence type tag and the sequence length octets).
NOTE 3 - The coding is supplementary service specific and the subject of other Recommendations.
NOTE 4 - If a result is included, then the operation value is mandatory and is the first element in the sequence.
NOTE 5 - It is a parameter within ROSE, but in the ISUP it is a subfield within a field.