How To Fix WB863 - Errors occurred when generating the tree control

SAP Error Message - Details

• Message type: E = Error

• Message class: WB - Messages for assortment list

• Message number: 863

• Message text: Errors occurred when generating the tree control

What causes this issue?

Errors occurred when generating the tree control.

System Response

The program is canceled.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WB863 - Errors occurred when generating the tree control ?

  The SAP error message WB863, which states "Errors occurred when generating the tree control," typically occurs in the context of SAP's Web Application Server or when working with certain SAP GUI transactions that involve hierarchical data structures, such as the Work Breakdown Structure (WBS) or other tree-like data representations.
  Causes:
  
  Data Inconsistencies: There may be inconsistencies or errors in the underlying data that the tree control is trying to display. This could be due to missing or corrupted entries in the database.
  Authorization Issues: The user may not have the necessary authorizations to view certain nodes or data in the tree structure.
  Configuration Issues: There may be issues with the configuration of the tree control itself, such as incorrect settings in the relevant transaction or program.
  System Performance: If the system is under heavy load or if there are performance issues, it may lead to timeouts or failures in rendering the tree control.
  Software Bugs: There may be bugs in the SAP software or specific patches that need to be applied.
  
  Solutions:
  
  Check Data Integrity: Verify the integrity of the data being displayed. Look for any missing or inconsistent entries in the relevant tables.
  Review Authorizations: Ensure that the user has the necessary authorizations to access all parts of the tree structure. This can be checked in transaction SU53 or by consulting with your security team.
  Configuration Review: Check the configuration settings related to the tree control. This may involve reviewing the settings in the relevant transaction or program.
  System Performance: Monitor system performance and check for any issues that may be affecting the rendering of the tree control. This may involve checking system logs or performance metrics.
  Apply Patches: Ensure that your SAP system is up to date with the latest patches and updates. Check the SAP Support Portal for any known issues related to the error message and apply relevant notes or patches.
  Debugging: If you have access to debugging tools, you can try to debug the program to identify the exact point of failure.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to WB863 for any specific guidance or known issues. You can search for relevant notes in the SAP Support Portal.
  Transaction Codes: Familiarize yourself with transaction codes that may be related to the tree control you are working with, such as SE80 (Object Navigator) or SE37 (Function Module).
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.