Indicates if a Commitment needs to be created as part of FR delivery. If
this field is not present, then no
commitment needs to be created.
Check the CommitmentPlan enum for the list of possible values.
Only applicable if FR is delivering to the same reservation. If set, all
parent commitments will be extended to match the end date of the plan for
this commitment.
Check the PreviousCommitmentTerms enum for the list of possible values.