Diagnosis
When you enter a stage, you cannot switch to single-column entry. Thismay have the following reasons:
There are stages with stage types 2 (load transfer) or 3 (border) forwhich you cannot use single-column entry.
There are differences between the destination point of a stage and thestarting point of the next stage. However, single-column entry requiresthat the destination point of a stage is the same as the starting pointof the next stage.

System Response
You cannot switch to single-column entry.

Procedure
Use double-column entry, delete the stages which do not have type 1(shipment) or define the starting point as identical to the destinationpoint of the previous stage.