How To Fix CNDET001 - Only mark one tab page as the front page

SAP Error Message - Details

• Message type: E = Error

• Message class: CNDET - Messages for Flexible Detail Display

• Message number: 001

• Message text: Only mark one tab page as the front page

What causes this issue?

You have set the "Front page" indicator for more than one tab page.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Set this indicator on only one tab page.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNDET001 - Only mark one tab page as the front page ?

  The SAP error message CNDET001: "Only mark one tab page as the front page" typically occurs in the context of customizing the user interface in SAP, particularly when dealing with tab pages in a screen or a dialog. This error indicates that more than one tab page has been marked as the "front page," which is not allowed.
  Cause:
  The error arises when:
  
  Multiple tab pages are incorrectly configured to be the default or front page in a screen or dialog.
  The configuration settings in the screen painter or the underlying code have not been set up correctly.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Access the Screen Painter:
  
  Go to the transaction code SE80 (Object Navigator) or SE41 (Menu Painter) depending on where the issue is occurring.
  Locate the screen or dialog that contains the tab pages.
  
  
  
  Check Tab Page Properties:
  
  Open the properties of each tab page.
  Ensure that only one tab page is marked as the "front page" or "default" tab. This is usually done by setting the "Default" property to true for only one tab.
  
  
  
  Adjust the Configuration:
  
  If you find that multiple tab pages are set as the default, change the properties so that only one tab page has this setting enabled.
  Save your changes.
  
  
  
  Test the Changes:
  
  After making the adjustments, test the screen or dialog to ensure that the error no longer appears and that the correct tab page is displayed as the front page.
  
  
  
  Transport Changes (if applicable):
  
  If you are working in a development environment and need to transport the changes to a production environment, ensure that you include the relevant objects in your transport request.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on screen and dialog programming, as well as guidelines for using the screen painter.
  SAP Community: You can also check the SAP Community forums for discussions related to this error, as other users may have encountered and resolved similar issues.
  Debugging: If the issue persists, consider using the debugger to trace the execution and identify where the configuration might be going wrong.
  
  By following these steps, you should be able to resolve the CNDET001 error and ensure that your SAP application functions correctly.