Description
Type: int
Maintenance Action to be performed.
Valid values:
- 
                1 = New
Used to increment the overall transaction quantity. 
- 
                2 = Replace
Used to override the overall transaction quantity or specific add messages based on the reference ID. 
- 
                3 = Cancel
Used to remove the overall transaction quantity or specific add messages based on the reference ID. 
- 
                4 = Reverse
Used to completely back-out the transaction such that the transaction never existed.