hi,
Abhishek,
You have to select the import parameter only via slection screen given via wizard to you.
Creating a Service Call for BAPI BAPI_FLIGHT_GETLIST
With the help of the service call function it is possible to call an existing function module from within a Web Dynpro component.To create a service call, you have an easy-to-use wizard at your disposal within the Web Dynpro tools in the ABAP Workbench.
Procedure
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1. Starting the Wizard
To start the wizard, position the cursor on the Web Dynpro component to be edited in the object list at the left margin of the workbench window. Open its context menu and choose the entry Create->Service Call. The wizard is started and leads you through the creation process.
Web Dynpro for ABAP: Tutorial 2 u2013 BAPI Usage 6
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Press Continue.
2. Choice of Controller
On the second dialog window of the wizard, you can choose whether the service call is to be embedded in an existing controller or whether a new controller is to be created for this purpose. Service calls can only always be embedded in global controllers u2013 that is, in the component controller or in additionally created custom controllers. It is not possible, to embed service calls in view controllers.
a. Select radio button Use Existent Controller
b. Do not change the default entry for component: ZZ_00_BAPIFLIGHT
c. Enter for controller COMPONENTCONTROLLER
d. Press Continue.
3. Service Type and Service Selection
a. You now select, which service type should be used for this service call. Select radio button Function Module. Leave Destination blank. Press Continue.
b. Select the service: for Function Module enter BAPI_FLIGHT_GETLIST. Press Continue.
4. The Required Methods and Context Elements
On the two subsequent dialog windows, default values are listed for giving names to the context nodes and attributes required by the service call as well as to the required methods. The proposed names are based on the names of the embedded service, but you can change them as required. However, heed the respective notes in the corresponding dialog box.
a. Adapt Context: Select from Nodes/Attributes Names DESTINATION_FROM, DESTINATION_TO and FLIGHT_LIST. Press Continue.
Web Dynpro for ABAP: Tutorial 2 u2013 BAPI Usage 7
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b. Specify Method Name: leave all entries as provided: Component: ZZ_00_BAPIFLIGHT Controller: COMPONENTCONTROLLER Method: EXCUTE_BAPI_FLIGHT_GETLIST Press Continue.
5. Completing the Choice
When you have confirmed the last dialog box, the generation is triggered. Afterwards you now have the required methods and contexts at your disposal for using them within your Web Dynpro component.
Result
The component controller context now contains
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