Enhancement of Standard Data Sources
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Adding additional fields to a standard
DataSource or changing its structure is termed as Enhancement
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For example, if an SAP provides a standard
DataSource with 10 fields and my requirement is to add 2 more fields to this
DataSource which is not provided by SAP in this DataSource, but these 2 fields
must be available at base table level
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The procedure for both LO and Non-LO DataSources
are the same, here we will enhance the LO DataSource as an example
Enhancement of Standard DataSource by
Adding Extra Field from Communication Pool
1)
Login to ECC System
i.
Before adding field to DataSource, if you have
data in your setup table you may get an error like setup table->Long text,
go to LBWG enter 02 as Application here 02 is for Purchasing, click Execute, then
click Yes
ii.
Go to LBWE (LO Cockpit), select DataSource
2LIS_02_SCL, click on Maintenance icon in Structure column, say Continue
iii.
In the selection Criteria pop up fields on the
left are the fields available in our DataSource, while fields on the right are available
in communication pool provided by SAP (The fields in communication pool has
attached code to extract data), click the Filter combo to see the base tables,
select MCEKKO MEMORY from the right and transfer it to the right section, click
Continue, next click Yes
iv.
Now you will see that DataSource is turned into
Inactive status in Update column, click DataSource name in DataSource column,
click Continue in pop ups
v.
The fields you added will be in hidden status just
uncheck them in Hide Field column, and click Save
vi.
Click Inactive in Update column to activate it
2)
Next you can follow the steps from “Loading Data
from ECC System” to extract and load data
Enhancement of Standard DataSource by
Adding Extra Field not Available in Communication Pool
1)
Login to BI System
As we already know tables related to purchasing are EKKO, EKPO etc.
i.
Go to SE11 to find your required field in table
EKKO, copy the technical name (EBSTYP) from the Data element column
ii.
Go to RSA2, enter DataSource name 2LIS_02_ITM,
click Display
iii.
On Extraction tab, double click the Extractor
which will bring you the ABAP code written by SAP to extract data to this
DataSource, we are not allowed to change this code, we will use the Extract
Structure for this purpose, so double click the Extract Structure, in Extract
Structure we will add the Append structure, from application toolbar click the
Append Structure… button
iv.
Enter Append Name (usually its same as that of
extract structure with z as starting letter), short description
v.
Paste ZEBSTYP in component column and EBSTYP in
Component type column on Components tab
vi.
Activate it, now the field EBSTYP will appear in
the Components tab of Extract Structure
window, this newly added field doesn’t have any logic to extract data, if we
run the extract checker (RSA3) all fields will have data but this field will
don’t have any data
To provide logic to our field for data extraction SAP provides 4 Exit
functions which execute after the standard code of extractor is executed by
DataSource, these are:
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EXIT_SAPLRSAP_001 (Used for transactional datasource)
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EXIT_SAPLRSAP_002 (Used for attribute datasource)
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EXIT_SAPLRSAP_003 (Used for text datasource)
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EXIT_SAPLRSAP_004 (Used for hierarchy datasource)
vii.
Go to SE37, enter the EXIT_SAPLRSAP_001, click
Display, double click on INCLUDE in code to open include file, scroll down to
case i_datasource, click Insert from the application toolbar and type your
code, here you will need a help of the ABAPer
This code will be given you by ABAPer
when ‘2lis_02_itm’.
Types: begin of It_EKKO,
EBELN type EBELN,
ERNAM
type ERNAM,
END OF it_EKKO.
DATA: IT_EKKO TYPE STANDARD
TABLE OF IT_EKKO,
WA_EKKO TYPE
IT_EKKO.
FIELD-SYMBOLS: <FS>
TYPE MC02M_0HDR.
DATA: IT_DATA TYPE STANDARD TABLE OF MC02M_0HDR.
IT_EKKO[] = C_T_DATA[].
SELECT EBELN ERNAM FROM EKKO
INTO TABLE IT_EKKO
FOR ALL ENTRIES in IT_DATA
WHERE EBELN = IT_DAT-EBELN.
IF SY-SUBRC = 0.
LOOP AT C_T_DATA assigning
<FS>.
READ TABLE IT_EKKO INTO
WA_EKKO WITH KEY ERNAM = <FS>-EBELN.
IF SY-SUBRC = 0.
<FS>-ZERNAM =
WA_EKKO-ERNAM.
ENDIF.
ENDLOOP.
ENDIF.
viii.
Activate it.
2)
Next you can follow the steps from “Loading Data
from ECC System” to extract and load data
