![Sap abap call screen in program download Sap abap call screen in program download](http://www.kodyaz.com/images/sap-abap/call-customer-function-user-exit-list.png)
Hi, I have requirement of displaying Tree ALV based on some input screen. When user keyed in relevant information on initial screen and pressed create button, a new screen will be displayed with Tree ALV. The Tree ALV will have one user-defined button on the toolbar. When clicking on the toolbar button, a pop-up screen should be displayed which has input fields where user can enter and click on 'Submit' button on the pop-up screen. After clicking 'Submit' button, the pop-up window should close and return back to Tree ALV screen. Challenges: Here the initial screen is developed using Module-pool report and the Tree ALV(ALV container screen is created in module pool report) is created using custom Z Class in SE24. Clicking on the button in ALV triggers an event method in Class.
Working with Sub screens. By Sravanthi. A Sub screen is nothing but a screen with in a screen. Displaying of data of one screen (sub screen) in the other screen (normal screen) is done by using sub screens. SAP (Systems Applications and Products) has many build in functions that displays pop-up dialog screens. Pop up a dialog screen and allow user to pick a selection WS_MSG - Create a dialog box in which you display an one-line message. POPUP_TO_CONFIRM_STEP - Create a dialog box in which you make a question whether the user wishes to perform the step.
![Abap Abap](https://help.sap.com/saphelp_nw73ehp1/helpdata/en/4a/43fa2b5bc52baee10000000a421937/loio4a43fa345bc52baee10000000a421937_LowRes.png)
Based on FCODE, I have to call the pop-up screen which is created in module pool report. Writing call screen line in method gives syntax error that, 'Dynpro's can't be accessible'. Please suggest a solution for this.