implicit and explicit enhancements

Varma Pericherla, ERPandERP Pvt. Ltd. Hyderabad

Implicit and Explicit Enhancements

There are four technologies available as part of the Enhancement Framework:

• Source Code enhancement

• Function Group enhancement

• Class enhancement

• Kernel-BADI enhancement

This Implicit and Explicit enhancement can be found in ECC6.0 version onwards. This

comes under the Enhancement Framework and can be switched using Switch framework.

A Spiral symbol that can be seen in the editors so that the whole program is switched into

enhancement mode wherein you can define your one enhancement in different ways like:

Source Code Enhancement

Whenever we are incorporating enhancements directly in the source code we go with this

source code plug-ins.

Implicit Enhancement

Explicit Enhancement

Enhancement-Point

Enhancement-Section

Implicit enhancement option

Enhancement options for these implicit enhancements are automatically available at certain pre-defined places given by SAP. Some of the implicit options are:

• At the end of all the programs such as Includes, Reports, Function pool, Module pool, etc. after the last statement.

• At the beginning and end of all FORM subroutines. • At the end of all Function Modules. • At the end of all visibility areas as public, protected and private of local class .


To view all the implicit options available in a source code, choose ‘Edit ->

Enhancement Operations -> Show Implicit Enhancement Options’ from the editor.

We don’t need to have an explicitly defined enhancement spot or points in order to

implement these enhancements. Just position your cursor on any of these implicit points

defined after the above procedure done and choose ‘Create Enhancement’ from the

menu to implement it.

Explicit enhancement option

This kind of enhancements as stated before is of two kinds .One that can be provided at a

specific place such as Enhancement Point , and another which can be used to replace a

group of statements called as enhancement Section.

Enhancement Section

When the Enhancement-Section is implemented, only the implementation done gets

executed and the original code doesn’t get executed. This is a new technique, which

didn’t exist previously in any of the old ways of enhancing, to exclude any standard SAP

code from execution. Because of this, there can be only one active implementation of an

Enhancement-Section.

Enhancement Point


This can be provided at a specific place and there can be multiple active implementations

of an Enhancement-Point. Also the order of implementation is not determined and cannot

be guaranteed.

Step by Step Implicit Enhancement

First of all going with Implicit enhancement here is an example of it in PZ80 (Section 80

Deduction Data).

To Disable Change Button on Screen 100.


Step 1.

In SE80 (object navigator) open the standard program SAPLEHIN80 in Function Group

EHIN80 in subroutine MODIFY_OKCODE_0100 double click on it.

Step 2. Open the program in Enhancement Mode

In Menu->Program->Enhance or clicking on the Spiral symbol in the application

toolbar above.

Step 3.

Once the program is opened in enhance mode than check for implicit enhancement place

available in the code. (As described before Menu->Edit->Enhancement Operations-

>Show Implicit Enhancement Options.


Step 4.

In the subroutine you will see the enhancement been provided by SAP.

Place the cursor on the line been highlighted and right click, select Enhancement

Implementations-> Create.

Give the enhancement name and short description in the pop-up that will be displayed

after create is selected.


Correspondingly the enhancement gets created.

Step 4.

In the subroutine you will see the enhancement been provided by SAP.

Place the cursor on the line been highlighted and right click, select Enhancement

Implementations-> Create

Give the enhancement name and short description.


Correspondingly the enhancement gets created, now the required code can be written in

the enhancement space provided in between ENHANCEMENT and

ENDENHANCEMENT.

CODE:


After placing the code in proper enhancement activate the enhancement.

Execute the Transaction PZ80 again.

A Message gets displayed on the status bar confirming that the change button is disabled.

Sometimes when we show the enhancements as Menu->Edit->Enhancement Operations-

>Show Implicit Enhancement Options a popup is displayed to select the program name

from the drop down list as the same subroutine may be used in other places also to take

care to put it in the proper Program only..

Select it as SAPLEHIN80.


Then u can go on with create, undo, replace and change the code written in the

enhancement space provided.

CODE:

This is how you can do Implicit enhancements in any Program. We generally go with this

if we do not get the option for any explicit enhancements in the source code.

Example For Explicit Enhancement

Start the Object Navigator (SE80)

Now starting first with Creation of a simple enhancement spot .

Semantically related enhancement options are grouped under a ‘Simple Enhancement

Spot’. ‘Composite Enhancement Spot’ contains one or more of Simple and other

Composite Enhancement Spots. On the other hand (implementation side), various related

implementation elements are grouped under a ‘Simple Enhancement Implementation’. A

‘Composite Enhancement Implementation’ can contain one or more of Simple and other

Complex Enhancement Implementations. The important point to note here is these four

entities form the basis of transportable objects in the Enhancement Framework.

Select the package in which you want to create the simple enhancement spot.

In case of explicit enhancement we can add our enhancements at any place as per our

requirement.

Well in our case we start with a Z program and do enhancement in it.

Before starting explicit enhancement we have to create a Enhancement Spot.

Enhancement Spot.

This has to be done under a package. So starting with creation of a package. Go to se80.


Create a package.

Enter the Following entries.

Right click on the Package and create an Enhancement->Enhancement Spot.


The screen comes as this.

The hierarchy is as below after expanding.

Now implement the enhancement.


Note that all this is getting created in the package itself.

Activate the whole application with package.

Now go to se38 and there in a ‘z’ program you can include your enhancement spot

created .This is a procedure wherein it becomes clear that how if one is creating a custom

program and wants that it would provide some enhancements wherein he can do the

enhancements .It is done as this.


Now keep the cursor on the editor and then select the create option as below.

A screen comes as this.


Here the options are here as you can create for data declarations as there is a data

declaration and in between if you want to provide an option to create some more

declarations for customers.

You need to put the cursor there in between the declarations done and then create the

enhancement as declaration or else the code is checked by default.

Now in the Program you can see the created spot for enhancement point.

Now right clicking on it…You can create the implementation for it as this but for this we

have to go to the Enhancement mode as here below.


Now create the implementation as below by right clicking.

This is how it comes.


Now in between this Enhancement and endenhancement you can put your code below

where the blue star is shown.

Activate only the enhancement as here. We don’t need to activate the whole Program.

This is how we can create and we can go through the creation of Enhancement spot. This

was a Custom one.

Now going for the standard one we have to go through the same procedure we did in

SE38.This will make the Explicit enhancement more clear.


EXPLICIT ENHANCEMENT IN VA01 TRANSACTION

Here is the Small sample scenario in which we will be defaulting the Sold-to-party value

in the VA01 transaction.

For this now first of all we need to find out the relevant explicit enhancement where we

can put the code.

So we first of all debug the transaction VA01 transaction and then at that time u will find

many explicit exits present.

Now this is the VA01 transaction.

From the System->status find the Program name where it is.

SAPMV45A

Now, click on the sales above in debugging mode we find in this module where there is a

form as below.


Inside the form below,

This is the enhancement section above in the given main program and the form name.


Now,

Going to Se80 and in the Program find include and the form where this enhancement

was there.

After tracing the place where the Section is there as we stated in the definition before that

section is used to replace the existing code of sap with the customer type.

So, we go as right clicking on the enhancement and checking the create option it gives

you the option to create your own enhancement for that section and the SAP code will be

present in the ENHANEMENT and ENDENHANCEMENT .You can change or edit the

code or keep your own code in that .

A pop-up comes were you can create the implementation.


After this it will be available in the table as before from there you can select and the

screen gives you the place to write your code.

So as we have selected ZTEST123 we proceed as above here is the below screen for it.


Above as it is seen is a explicit enhancement and inside that the name of the section is

VBAK-ORGDATEN_PRUEFEN_10.

There may be many other enhancements present. Implement your own enhancement here

or if u want u can change a present enhancement.

The enhancement implemented here is our ZTEST123 and in the just we are giving a

default value for Sold-to-Party as ‘1’.


Activate the Enhancement only as below….


And now run the transaction VA01 transaction.

This is how the Explicit enhancements are done. The simplest way to trace out that the

particular enhancement is getting triggered or not at the place u want ,You put a break-

point in that Enhancement and Endenhancement and check the debugging starts at that

place or not.

Similarly we can proceed with the Enhancement-point but that is a place were you create

a particular code no replacement of SAP code is there.

Best-practice for the order in which the enhancement options should be considered and

used is:

• Use a BADI; if there is no BADI to suite your need then,

• Try to solve it using Explicit Source code, Function and Class enhancements; and,

• Implicit Source code enhancement should be the last option to choose

Of course, if none of the above could solve your adaptation needs and if your need

demands it, modification should be the last option to be tried.

implicit and explicit enhancements

Documents