Field Exits

SAP-Field Exits

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Definition – Field Exits • Field exits are branches from a screen field with a data element reference into a function module. Field exits can be selected globally or selectively.

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Objectives • When to apply a Field Exit. • Create a Field Exit.

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Field Exits

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Field Exits  

SAP R/3

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ABAP Dictionary

Field 1 Field 2

Function module

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Entry

Obligatory field checks

Field format  checks checks andand field transport

Foreign key checks

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Creating Field Exits 

Creating Field Exits

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Function Builder

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Function module

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FIELD_EXIT_DTEL

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Global enhancements

Create field exit

Field exit for data element ...?

Create function module

Edit function module 

Activate function module

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Interface

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Assign program/screen (for local field exits only)

Activate field exit

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INPUT Export parameter

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Types of Filed Exits Field Exits are branches from a screen field with data element reference in a function module. They are of 2 types – Global Field Exits – Local Field Exits.

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Global Field Exits • Global Field Exits are not limited to one screen. If you use the data element on multiple screens, you will branch to a function module from all these screens once the exit is activated.

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Local Field Exits • Local field exits are valid for one screen only. If you assign the screen of a specific program to the data element, then you will branch to a function module only from this screen after activation.

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Syntax • Prefix : FIELD_EXIT_ • Name : _ • Suffix (optional) : 0 to 9, A to Z

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When does it Trigger Data Entry Check Required Fields Check Field Format Your Function Module Fires Here Foreign Keys

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Example •

We will create a field exit for data element ‘MATNR’.

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We will create a ‘Global Field Exit’. In which we will restrict users from entering a Material No ASD123.

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In the second instance we will create a ‘Local Field Exit’ so that it triggers only when the material no is 300 and check it using examples 1 & 2. And the filed exit should fire only in the second example.

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Example 1 Data element Matnr

Program : SAPLMGMM , Screen No. : 0060 Note : You can also use ‘MM02’ or ‘MM03’ transaction. 12

Example 2 Data element Matnr

Program : SAPMM03Z Screen No. : 0100 13

Creating Global Field Exits •

Global Field Exits ….step 1 Run the program using SE38

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Creating a Global Field Exit… step 2

Give your Data elements which you want to create a Field Exit

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Creating a Global Field Exit… 3 This will take you to SE37 transaction with a function module name by default Just say Create

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Creating a Global Field Exit… 4 Write the code and generate it And go back

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Creating a Global Field Exit… 5

Select the Data Element and say Activate

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Creating a Global Field Exit… 6

It will ask u for a transport request Just create it and say continue

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Creating a Global Field Exit…. 7

You have now created a GLOBAL FIELD EXIT

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Check the Global Field Exit…1 • Run the transactions ‘MM01’, ‘MM02’, ‘MM03’ or ‘MMAM’ It should not allow Material No ASD123 in the screens.

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Check the Global Field Exit…….2

We will check using transaction ‘MM02’. i.e example 1.

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Check the Global Field Exit…….3

Enter Material no ASD123 press enter

you should see an error message here

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Creating a Local Field Exit Creating a Local Field Exit…….1 Select the Global Field Exit you have created and then select Assign prog / screen

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Creating a Local Field Exit…….2 YOU GET A POPUP SCREEN Enter the <Screen name> <screen no> and that is from A to Z or 0-9

And say continue

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Creating a Local Field Exit…….3

It will take you to the se37 screen with default function module name Just say create (this will not appear if the function mod already exists)

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Creating a Local Field Exit…….4 Write the code activate it. Then go back to field exit screen.You will be asked for a Transport Request just create the request and say continue

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Creating a Local Field Exit…….5 You will see the program name and screen number appearing in the same line as the data element Just select it and say activate Your Local Field exit is complete

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Check the Local Field Exit…….1

We will check using transaction ‘MMAM’. i.e example 2.

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Check the Local Field Exit……..2

Enter Material No =300 and material type then press Enter

You should see an error message here

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Check the Local Field Exit…….3

We will check using transaction ‘MM02’. i.e example 1.

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Check the Local Field Exit…….4 Enter Material No 300 and press Enter

If the material is already created it show that material details or a error message other than the error message we have given should be shown here 32

Thank You

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