The human-readable equivalent for this field is contained in "error". This value is null if the message is still being processed
-
ACK(value:'ACK') -
DELIVRD(value:'DELIVRD') -
UNDELIV(value:'UNDELIV') -
FAILED(value:'FAILED') -
UNKNOWN(value:'UNKNOWN') -
ACCEPTD(value:'ACCEPTD') -
REJECTD(value:'REJECTD') -
DELETED(value:'DELETED') -
EXPIRED(value:'EXPIRED') -
NACK(value:'NACK') -
SEEN(value:'SEEN')