Lanes are frequently not defined for referential tariffs. Since the carrier performance score at lane level is maintained in the lane table, there will generally be no place-holder for the lane level scores for referential tariffs. There are several configuration alternatives:
Establish override lanes for the referential tariff in cases where the carrier performance score will differ from the value defined at carrier level.
If it would be appropriate to use lane level scores for the corresponding master tariff, enable the applicable flag in the tariff master for the referential tariff.