In this step you define an assignment group, which determines how the external structure is assigned to a CO-PA line item table.
The operating concern and external structure must be defined.
Create the assignment group.
The name of the line item table for actual data is the prefix
"CE1" plus the name of the operating concern (for example, CE10001
for operating concern 0001).
This allows you to transfer data from several non-SAP datasets to a line item file.