In SAP all the entities who are involved in a business transaction are represented as partners. Ex :A carrier can be created as a partner on the sales order. This document describes the partner determination on the sales order. Partner function specifies the kind of the role the partner is playing in the document.
A [...]

How to access the module using menu path:
SAP Menu -> Logistics -> Sales Distribution -> Shipment -> Transportation Planning -> VT01 -> Display Freight Cost
How to access the module using TCODE:
VI03
The entry process to display the freight cost document:

1. Select the shipment cost number.
2. Click enter to continue.
Below we see the “Display Freight costs” screen, [...]

How to access the menu using TCODE:
VI01
The entry process to create shipment cost document:

1. Select shipment number match code and select the appropriate number.
2. Select shipment cost type match code and select the appropriate type.
3. Click enter to continue.
Below is the overview of the fright cost items.
In this picture we can see the shipment cost [...]