If the message is a cancellation, that is, Function of the Message (field 23G) is CANC, then field :20C::PREV must be present in one and only one occurrence of A1; consequently, in all other occurrences of A1, field :20C::PREV is not allowed (Error code(s): E08).
 Sequence Aif field :23G: is ... |
Then field :20C::PREV is ... |
|---|---|
| CANC |
Mandatory in one occurrence of subsequence A1, and not allowed in all other occurrences of subsequence A1 |
| NEWM |
Not applicable |
