In SAP S/4HANA Transportation Management, resources represent assets used in transportation, and some can define capacity for planning purposes. According to the SAP documentation:

Transportation unit resource (A): Represents vehicles or trailers and includes capacity attributes (e.g., weight, volume) used in planning to ensure goods fit within the resource’s limits.

Handling resource (D): Represents equipment like forklifts or cranes, which can have capacity definitions (e.g., handling capacity) for warehouse or loading activities.

The other options are incorrect:

Calendar resource (B)defines availability schedules but does not represent physical capacity.

Equipment types (C)categorize equipment but do not directly define capacity, which is set in specific resources.