Description
Type: int
Specifies under what conditions the buyer and seller should be excused of their delivery obligations.
Valid values:
- 
                1 = Firm
Never excused of delivery obligations. 
- 
                2 = Interruptible or non-firm
Excused when interrupted for any reason or for no reason without liability. 
- 
                3 = Force majeure
Excused when prevented by force majeure. 
- 
                4 = System firm
Must be supplied from the owned or controlled generation of pre-existing purchased power assets of the system specified. 
- 
                5 = Unit firm
Must be supplied from the generation assset specified.