## Rate basis numbers and rate booksA rate basis number in LN is a code that represents a combination of one or more of the following attributes: - Freight class
- Transport means group
- Transport type
- Planning group
You can use rate basis numbers to determine the carrier rates for the following entities: - Shipments
- Loads
- Freight order clusters
- Sales order lines
- Sales quotation lines
During freight cost calculation, a rate basis number is allocated to a shipment, cluster, and so on, if the attributes of the shipment, cluster, and so on, match those defined for the rate basis number. In the Pricing module, carrier freight rate books are linked to rate basis numbers. If the attribute values of the rate basis number match a shipment or a cluster, and so on, the rate basis number is allocated to the shipment or cluster and the freight rate book associated to the rate basis number is used to calculate the freight costs for the shipment or cluster. In addition to rate basis numbers, other attributes, such as freight service levels and carriers, can also be used to retrieve freight rates to calculate the freight costs loads, clusters, and so on. A carrier rate book can include various properties, in addition to rate basis numbers, that are used to retrieve carrier freight rates.
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