Call transaction method

Call Transaction Method

Dec-2008 Data Interfaces |

Objectives

• The participants will be able to:– Describe the Call Transaction Method for Batch

Input.– Differentiate the different batch input methods.

Dec-2008 Data Interfaces | 2

Overview


PROGRAM DYNPRO DYNBEGIN FNAM FVAL

SAPMF02K 0106 X RF02K-LIFNR TEST1

RF02K-D0110 X

SAPMF02K 0110 X

LFA1-STRAS 123 Main St.

BDC_OKCODE =UPDA

BDC Table

Create Batch Input Session

(BDC Program)

Create Batch Input Session

(BDC Program)

Use in “CALL TRANSACTION”

statement

Use in “CALL TRANSACTION”

statement

Use in “CALL DIALOG” statement

Use in “CALL DIALOG” statement

Differences in Batch Input Methods


When is the SAP database updated?

How are errors handled?

Create batch

input session

(BDC Program):

During the processing of the batch input session

Automatically by the system during the

processing of the batch input session

CALL TRANSACTION:

CALL DIALOG:

During the execution of the batch input program

Must be handled in the batch input program

Example - Change Vendors


Name

Street

Computers, Inc.

123 Main St.

City Philadelphia

Vendor

Company Code

TEST1

AddressX

Vendor

Company Code

TEST2

AddressX

Name

Street

Computer Land

10 Walnut St.

City Boston

To illustrate the “CALL TRANSACTION” and “CALL DIALOG” methods, we will use the example to change vendors coming

from a sequential file.

“CALL TRANSACTION USING” Statement


CALL TRANSACTION <transaction code>

USING <bdc internal table>

MODE <display mode>

UPDATE <update mode>

MESSAGES INTO <msg int. table>.

<display mode>

A: display all

E: display errors only

N: no display

<update mode>

S: synchronous

A: asynchronous

“CALL TRANSACTION USING” Statement (Contd.)


CALL TRANSACTION <transaction code>

USING <bdc internal table>

MODE <display mode>

UPDATE <update mode>

MESSAGES INTO <msg int. table>.

<display mode>

A: display all

E: display errors only

N: no display

<update mode>

S: synchronous

A: asynchronous

L: local update

Example #1 - Declaration Section


REPORT YDI00007.

DATA: BDC_TAB TYPE STANDARD TABLE OF BDCDATA INITIAL SIZE 6,

WA_BDC_TAB TYPE BDCDATA.

INFILE(20) VALUE ‘./bc180_file4’.

DATA: BEGIN OF INREC,

VENDNUM TYPE LIFNR,

STREET TYPE STRAS_GP,

END OF INREC.

PARAMETERS: DISPMODE DEFAULT ‘A’,

UPDAMODE DEFAULT ‘S’.

** This program is continued on the next slide **

Step #1

Step #2

Example #1 - Main Program


START-OF-SELECTION.OPEN DATASET INFILE

FOR INPUT IN TEXT MODE.DO.

READ DATASET INFILE INTO INREC.IF SY-SUBRC <> 0.

EXIT. ENDIF.

PERFORM FILL_BDC_TAB.CALL TRANSACTION ‘FK02’

USING BDC_TABMODE DISPMODEUPDATE UPDAMODE.

IF SY-SUBRC <> 0.WRITE: / ‘Error’.

ENDIF.ENDDO.CLOSE DATASET INFILE.


Step #3

Step #4

Step #5

Step #6

Step #7

Step #8

Step #9

Example #1 - Main Program (Contd.)


START-OF-SELECTION.OPEN DATASET INFILE

FOR INPUT IN TEXT MODE.DO.

READ DATASET INFILE INTO INREC.IF SY-SUBRC <> 0.

EXIT. ENDIF.

PERFORM FILL_BDC_TAB.CALL TRANSACTION ‘FK02’

USING BDC_TABMODE DISPMODEUPDATE UPDAMODE.


ENDIF.ENDDO.CLOSE DATASET INFILE.


Step #3

Step #4

Step #5

Step #6

Step #7

Step #8

Step #9

Example #1 - Subroutines


FORM FILL_BDC_TAB.

REFRESH BDC_TAB.

PERFORM POPULATE_BDC_TABUSING:

‘1’ ‘SAPMF02K’ ‘0106’,‘ ’ ‘RF02K-LIFNR’ INREC-

VENDNUM,‘ ’ ‘RF02K-D0110’ ‘X’,

‘1’ ‘SAPMF02K’ ‘0110’,‘ ’ ‘LFA1-STRAS’ INREC-STREET,‘ ’ ‘BDC_OKCODE’ ‘=UPDA’.

ENDFORM.

FORM POPULATE_BDC_TAB USINGFLAG TYPE C

VAR1 TYPE C VAR2 TYPE C.

CLEAR WA_BDC_TAB.IF FLAG = ‘1’.

WA_BDC_TAB-PROGRAM = VAR1.WA_BDC_TAB-DYNPRO = VAR2.WA_BDC_TAB-DYNBEGIN = ‘X’.

ELSE.WA_BDC_TAB-FNAM = VAR1.WA_BDC_TAB-FVAL = VAR2.ENDIF.

APPEND WA_BDC_TAB TO BDC_TAB.

ENDFORM.

Notice that the vendor number and street values are coming from the file’s records read into the “INREC” structure.

Error Handling


Write an error report.

Send the record(s) in error to an error file.

Create a batch input session with the record(s) in error.

BDC Program Flow


Declare BDC Table Fill BDC Table

Collect Transaction InformationCreate & Record Program

Process Batch Input Methods

Batch Input Sessions

Call Transaction

Synchronous versus Asynchronous


DO.. . .PERFORM FILL_BDC_TAB.CALL TRANSACTION ‘FK02’

USING BDC_TABMODE ‘N’UPDATE ‘S’.


ENDIF.ENDDO.

DO.. . .PERFORM FILL_BDC_TAB.CALL TRANSACTION ‘FK02’

USING BDC_TABMODE ‘N’UPDATE ‘A’.

IF SY-SUBRC <> 0.WRITE: / ‘Transaction error’.

ENDIF.ENDDO.

With synchronous updating, we can check SY-SUBRC to determine the success of the transaction and the

actual update to the database.

With asynchronous updating, we can check SY-SUBRC to determine the success of the transaction only,

not the actual update to the database.

Demonstration

• Creation of a custom BDC program and changing customer address with transaction XD02 (Change Customer) using the Call transaction method.


Practice

• Creation of a custom BDC program and changing customer address with transaction XD02 (Change Customer) using the Call transaction method.


Summary

• If you use the “CALL TRANSACTION” or “CALL DIALOG” statement, errors are not handled automatically by the system. Errors must be handled in the batch input program.

• The “CALL TRANSACTION” statement executes an online program. When this transaction is completed, processing returns to the “calling” program.


Questions

• What are the different batch input methods present in SAP for data upload?

• What is the difference between synchronous and asynchronous update?


Call transaction method

Documents

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