Data Transfer: Routings 
Purpose
You can transfer data of the following routing types from a legacy system to an SAP system:
● Routing (object type BUS1012)
● Reference operation set (object type BUS1190)
Process Flow
The process flow for data transfer is the same for both routing types. There are different procedures for data transfer. The R/3 release where you created your legacy data (routings) determines the procedure.
● In R/3 4.6B and lower, you can only use the following functions to create routings:
○ Transaction CA01 for creating routings
○ Transaction CA11 for creating reference operation sets
In you only want to transfer routing data that was created with these transactions, you can use the data transfer workbench (transaction SXDA). The data transfer program RCPTRA01 uses batch input. The system documentation for the transfer program contains the structuring rules.
For more
information, see 
Data Transfer
Workbench and Batch Input for
Routings.
●
As of R/3 4.6C,
you can also use the
engineering
workbench (transaction
CEWB) with enhanced functionality. For example, you can define effectivity
parameters or create several change states on the same key date.
If you want to transfer this data, use Legacy System Migration Workbench
(transaction LSMW) to
migrate the data.
The data is transferred in the following process steps:
○
Import data (legacy
data into spreadsheets and/or sequential files).
You can use any combination of PC files and server files.
○ Convert data (from the source format to the target format).
○ Import data (into the database of the SAP application).
For a detailed
description of how to use LSMW to convert data, see Legacy System
Migration Workbench.
In the workbench, you use Business Application Programming Interfaces (BAPIs) for direct input. In the BAPI explorer, these BAPIs are created for the following object types:
● Routing (BUS1012)
● Reference operation set (BUS1190)
If you have created routing data with transactions CA01 and CA11, you can also convert this data with LSMW. The data transfer program RCPTRA02 uses direct input.