Diagnosis
You specified that a transportation chain should be created.
This means that the selected deliveries are processed in severalprocesses, for example, main leg shipments in the first process,preliminary leg shipments in the second process, and subsequent legshipments in the third process.
You can have a maximum of five processes. A transportation chainrequires at least two processes.

Procedure
This means that, when using a transportation chain, you must specify atleast which data and options are required for the second process forthe second and any additional processes.