How To Fix AB063 - Use of ALV grid not supported for hierarchical lists!

SAP Error Message - Details

• Message type: E = Error

• Message class: AB -

• Message number: 063

• Message text: Use of ALV grid not supported for hierarchical lists!

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AB063 - Use of ALV grid not supported for hierarchical lists! ?

  The SAP error message AB063: Use of ALV grid not supported for hierarchical lists typically occurs when you are trying to use the ALV (ABAP List Viewer) grid display for a hierarchical list. The ALV grid is designed for flat lists and does not support hierarchical data structures, which can lead to this error.
  Cause:
  
  Hierarchical Data Structure: The data you are trying to display is in a hierarchical format (e.g., parent-child relationships), which is not compatible with the ALV grid.
  Incorrect Function Module: You might be using a function module or method that is intended for flat lists instead of one that supports hierarchical data.
  Configuration Issues: There may be configuration settings in your ALV report that are not set up to handle hierarchical data.
  
  Solution:
  
  
  Use Hierarchical ALV: Instead of using the standard ALV grid, you should use the Hierarchical ALV (HALV). This is specifically designed to handle hierarchical data structures. You can use the function module REUSE_ALV_HIERSEQ_LIST_DISPLAY or the class CL_GUI_ALV_HIERSEQ_LIST for this purpose.
  
  
  Check Data Structure: Ensure that the data structure you are passing to the ALV is appropriate for the type of ALV you are using. If you are using a hierarchical structure, make sure to use the correct methods and classes.
  
  
  Review Code: Go through your code to ensure that you are not inadvertently trying to display hierarchical data using the ALV grid. Look for any calls to ALV grid functions and replace them with the appropriate hierarchical ALV functions.
  
  
  Documentation: Refer to the SAP documentation for ALV and hierarchical lists to understand the differences and how to implement them correctly.
  
  
  Related Information:
  
  
  ALV Types: Understand the different types of ALV available in SAP:
  
  ALV Grid: For flat lists.
  Hierarchical ALV: For hierarchical data.
  
  
  
  Function Modules:
  
  REUSE_ALV_LIST_DISPLAY: For standard ALV grid display.
  REUSE_ALV_HIERSEQ_LIST_DISPLAY: For hierarchical ALV display.
  
  
  
  Classes:
  
  CL_GUI_ALV_GRID: For ALV grid.
  CL_GUI_ALV_HIERSEQ_LIST: For hierarchical ALV.
  
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to ALV and hierarchical lists.
  
  
  By following these guidelines, you should be able to resolve the AB063 error and successfully display your hierarchical data in SAP.