Backup%20 domain%20controller%20(bdc)%20step by-step(1)

BDC Step-by-Step
SAP DEVELOPER NETWORK | sdn.sap.com BUSINESS PROCESS EXPERT COMMUNITY | bpx.sap.com
© 2007 SAP AG 1
BDC Step-by-Step
Applies to:
SAP ABAP
Summary
This article demonstrates in a step-by-step process to write Backup Domain Controller (BDC) reports to do
data transfer from legacy system, which is important work during SAP implementation projects.
Author(s): Renjith Kumar. P
Company: PRICOL Technologies
Created on: 21 January 2007
Author Bio
P. Renjith Kumar is SAP BI Consultant with PRICOL Technologies. He has extensive cross-functional
experience and has been with end-to-end SAP implementations as ABAP Consultant.

BDC Step-by-Step
© 2007 SAP AG 2
Table of Contents
Overview: How It Works .................................................................................................................. 2
Steps in data transfer....................................................................................................................... 2
Data Transfer Methods.................................................................................................................... 3
Step-by-Step Process...................................................................................................................... 3
Task 1: Recording............................................................................................................................ 3
Task 2: Creating ABAP Report based on recording done............................................................... 6
Task 3: Writing ABAP report to do data transfer ........................................................................... 10
Testing ........................................................................................................................................... 19
Disclaimer and Liability Notice....................................................................................................... 20
Overview: How It Works
BDC Reports are used to transfer data from legacy system into SAP system during SAP
Implementation. Based on the functional requirements you have to now write a BDC report to
upload the legacy data into SAP system.
To Perform Data transfer, we will perform 3 tasks:
Task 1: Do a recording for the transaction by supplying sample data.
Task 2: Create an ABAP report based on the recording done.
Task 3: Now write ABAP code to fetch data from legacy system and store into SAP
System.
Steps in data transfer
1. Analysis and cleanup of data in the non-SAP system
2. Extraction of data from the non-SAP system
3. Mapping the data in SAP format
4. Transferring the data to the SAP System
5. Checking the data

BDC Step-by-Step
© 2007 SAP AG 3
Data Transfer Methods
Call transaction
Asynchronous processing takes place and the transaction is called every time.
Session method
Synchronous processing takes place and a session is prepared, which is to be handled through SM35.
Moreover, in Batch Input processing system log is maintained for every transaction. In Call transaction
method messages have to be captured at runtime.
Direct input
This is an SAP supplied conversion program that allows very fast loading of certain objects. The
disadvantage is that it is not customizable.
Step-by-Step Process
Task 1: Recording
1. Give transaction SHDB ( Transaction Recorder ), this is used to record our transaction
Press New Recording, Give Recording name, Give Transaction, And Press Start Recording.

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© 2007 SAP AG 4
2. You will get the following screen, Give the selection screen inputs as below, finally
Save.

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3. The following screen comes when you save, this shows table name and filed name
Which stores the data given in respected selection screen of transaction. Next Press
F3 to come back.

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© 2007 SAP AG 6
Task 2: Creating ABAP Report based on recording done
Now select your Recording and press Create program icon.
You will be asked to fill the following selection screens

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© 2007 SAP AG 7

BDC Step-by-Step
© 2007 SAP AG 8

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BDC Step-by-Step
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Using SE11 get the Length of the fields. It must be supplied in MS-Excel
Now we are going to Upload the following fields in
First Screen
Vendor No, Company Code, Account Group
Second Screen
Name, Search Parameter, Street, House No, City, Country Code, Region, PO Box
Language, Telephone
Final Screen
Recon Account, Cash Mgmt Group
Task 3: Writing ABAP report to do data transfer
Now Four Steps in ABAP Editor:

BDC Step-by-Step
© 2007 SAP AG 11
1. Create an internal table for above fields in the report after Include bdcrecx1.
2. Next call upload function after start-of-selection

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3. Put Loop after perform open group
Close loop using Endloop.
4. Now replace the constants in perform statement within loop by internal table name

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With field name. Make the values used in recording in “. Then Save, Activate
This is your data in MS-Excel. This order must be in the Internal table of ABAP report.

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Select ‘ Text ‘
Now Give respected Length for each fields. By placing Cursor in each column, Right Click, Select Column
Width.

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Since LIFNR are 16 give that width.
After that save the excel file. And save a copy as Formatted text space delimited

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Give OK, Yes, Then Close Excel by giving No.
Now come to ABAP editor and run the report, you will get the screen.
Select Call transaction Radio Button, and run in a mode. Press F8
Now in next screen Give the .prn file you saved previously. ( .prn must be selected )
Then press Transfer.

BDC Step-by-Step
© 2007 SAP AG 18
You will get following screen, Just Check for correct order of data, if yes, Press Enter
Next Screen comes, Press Enter.
The vendor created. And system shows log. If small errors you can select that from F4 help and run the
report.

BDC Step-by-Step
© 2007 SAP AG 19
Testing
FK03 -> Give Vendor no, Comp code. Enter. Select desired radio button and enter

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© 2007 SAP AG 20
Disclaimer and Liability Notice
This document may discuss sample coding or other information that does not include SAP official interfaces
and therefore is not supported by SAP. Changes made based on this information are not supported and can
be overwritten during an upgrade.
SAP will not be held liable for any damages caused by using or misusing the information, code or methods
suggested in this document, and anyone using these methods does so at his/her own risk.
SAP offers no guarantees and assumes no responsibility or liability of any type with respect to the content of
this technical article or code sample, including any liability resulting from incompatibility between the content
within this document and the materials and services offered by SAP. You agree that you will not hold, or
seek to hold, SAP responsible or liable with respect to the content of this document.

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