C1
If the message is a cancellation, ie, Function of the Message (field 23G) is CANC, then subsequence A1 Linkages must be present at least once, and a reference to the previous message must be specified in the Linkage section, ie, field :20C::PREV must be present minimum once in that message (Error code(s): E08).
 Sequence AIf field :23G: is... |
Then Subsequence A1 is... |
And in minimum one occurrence of Subsequence A1 field :20C::PREV is... |
|---|---|---|
| CANC |
Mandatory,ie, minimum one occurrence of A1 |
Mandatory(Note: it does not need to be present in all occurrences of A1) |
| Not CANC |
Optional |
Optional |
