The promotion's fee information (rates and incentive programs) that was locked at the time of promotion creation. You can estimate promotion fees (fee preview) at time t1, while promotion creation can happen at time t2. This object includes the fee information captured at time t2. If empty, it means that no fee information was recorded, which indicates that either a promotion type or a marketplace does not currently support promotion fees.
The promotion's fee information (rates and incentive programs) that was locked at the time of promotion creation. You can estimate promotion fees (fee preview) at time t1, while promotion creation can happen at time t2. This object includes the fee information captured at time t2. If empty, it means that no fee information was recorded, which indicates that either a promotion type or a marketplace does not currently support promotion fees.