Working with User-Exits

By Santosh L.Ghonasgi, CAPGemini India

Enter the transaction VA01.

Go to menu System and select sub item status.

We will get the name of the program as (SAPMV45A).

Now go to SE38 Editor and type the program name as SAPM45A.

And select subobjects - attributes radio button and press Display.

Note the package name. In this case, it is VA

Now go to SMOD Transaction (SMOD is used to find the enhancements and user exits.)

Here if we enter the enhancement name it results the list of user exit names.

But we dont known the Enhancement name so press the Utilities > Find menu option.

Press Execute .

In the above enhancements our program name SAPMV45A Matches four enhancements.

So, In the below enhancements we have to check the right one.

V45A0001 - Determine alternative materials for product selection V45A0002 - Predefine sold-to party in sales document V45A0003 - Collector for customer function module pool MV45A V45A0004 - Copy packing proposal into outbound Delivery.

Click here to continue..

My Analysis :

Every Function Module for Enhancement supplies some Import and Export Parameters.

Through which we get some values.

V45A0001 The Description of this enhancement tell us that it determines the alternative materials for product selection. (i.e., If one material is not available what is the other material that has to be used as an alternative. So it is item specific).

FUNCTION EXIT_SAPFV45S_001. *"---------------------------------------------------------------------- *"*"Lokale Schnittstelle: *" IMPORTING *" VALUE(REQUESTED_DELIVERY_DATE) LIKE VBAK-VDATU *" VALUE(ENTERED_MATERIAL) LIKE VBAP-MATNR *" VALUE(REQUESTED_DELIVERY_QUANTITY) LIKE VBAP-KWMENG *" VALUE(SALES_UNIT) LIKE VBAP-VRKME OPTIONAL *" VALUE(DELIVERED_QUANTITY) LIKE VBAP-KLMENG OPTIONAL *" VALUE(DELIVERING_PLANT) LIKE VBAP-WERKS OPTIONAL *" VALUE(STORAGE_LOCATION) LIKE VBAP-LGORT OPTIONAL

If we observe the Importing parameters

1. There is no way to get VBAK EBELN (Sales Order No.) and other header data form VBAK.

So, this user exit is not useful.

V45A0002 - By Description we understand that we can predefine sold-to party in the sales document. (i.e., it is used to populate the field sold-to party through user-exit while entering the data. ) But our requirement comes after entering the data in the screen and save button is pressed.

FUNCTION EXIT_SAPMV45A_002. *"---------------------------------------------------------------------- *"*"Lokale Schnittstelle: *" IMPORTING *" VALUE(I_TVAK) LIKE TVAK STRUCTURE TVAK *" VALUE(I_TVTA) LIKE TVTA STRUCTURE TVTA *" VALUE(I_VKGRP) LIKE VBAK-VKGRP *" VALUE(I_VKBUR) LIKE VBAK-VKBUR

And even the importing parameters are not useful for us.

V45A0004 - Copy packing proposal Into Out bound delivery. This description implies that whenever we create a Delivery Order from Sales Order it copies the packing proposal Based on the already created Sales order. So, there is no chance for us to save the data while we create or change a Sales order.

V45A0003 - Collector for customer function module pool MV45A - This description some what looks good . But description there is no functionality mentioned. So, let us drill down.

We have 2 exits.

Function module Short Text

EXIT_SAPMV45A_003 Rev.Rec.: Copy Requirements An Header

EXIT_SAPMV45A_004 Rev.Rec.: Field Modification Sales

FUNCTION EXIT_SAPMV45A_004. *"---------------------------------------------------------------------- *"*"Lokale Schnittstelle: *" IMPORTING *" VALUE(I_SCREEN_NAME) LIKE FELD-NAME *" VALUE(I_VBAP) LIKE VBAP STRUCTURE VBAP *" VALUE(I_VBUP) LIKE VBUPVB STRUCTURE VBUPVB *" VALUE(I_SCREEN_GROUP4) LIKE FELD-GRP4 *" VALUE(I_T180_AKTYP) LIKE T180-AKTYP

From Exit 004 Description and Importing parameters we can clearly see that this exit is used for Field modifications.

EXIT_SAPMV45A_003 - From the Description and Importing parameters we get the header data that can be used for our requirement.

FUNCTION EXIT_SAPMV45A_003. *"---------------------------------------------------------------------- *"*"Lokale Schnittstelle: *" IMPORTING *" VALUE(XVBAK) LIKE VBAK STRUCTURE VBAK *" VALUE(XVBUK) LIKE VBUK STRUCTURE VBUK *" VALUE(XKOMK) LIKE KOMK STRUCTURE KOMK

The purpose of SMOD is to find User Exits.

Once we find the user exits, We go to CMOD. The purpose of the CMOD is to register what we are going to do in the particular enhancement. So, at the time of up gradation it will be easy to retain the code.

click on Create.

Now in the next screen (see below), click on Save and then on Enhancement assignments)

Now enter your enhancement name, click on Save and then on Components

Now double click on the required function exit

data: gt_exit type zexit, gs_vbeln TYPE zexit-vbeln,

gs_inr TYPE vbak-netwr, gs_loc type vbak-waerk value 'INR'.

CALL FUNCTION 'CONVERT_TO_LOCAL_CURRENCY' EXPORTING CLIENT = SY-MANDT date = sy-datum foreign_amount = xvbak-netwr foreign_currency = xvbak-waerk local_currency = gs_loc RATE = 0 TYPE_OF_RATE = 'M' READ_TCURR = 'X' IMPORTING EXCHANGE_RATE = FOREIGN_FACTOR = LOCAL_AMOUNT = gs_inr LOCAL_FACTOR = EXCHANGE_RATEX = FIXED_RATE = DERIVED_RATE_TYPE = EXCEPTIONS NO_RATE_FOUND = 1 OVERFLOW = 2 NO_FACTORS_FOUND = 3 NO_SPREAD_FOUND = 4 DERIVED_2_TIMES = 5 OTHERS = 6 . IF sy-subrc 0. MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4. ENDIF.

if gs_inr > '1000'. gt_exit-zstatus = 'High Value'. elseif gs_inr > '100' and gs_inr < '1000'. gt_exit-zstatus = 'Normal Value'. elseif gs_inr < '100'. gt_exit-zstatus = 'Low Value'. endif.

gt_exit-vbeln = xvbak-vbeln. gt_exit-vkorg = xvbak-vkorg. gt_exit-vtweg = xvbak-vtweg. gt_exit-spart = xvbak-spart.

insert into zexit values gt_exit. clear gt_exit.