How To Fix WAHD621 - Field catalog for SAP List Viewer not found

SAP Error Message - Details

• Message type: E = Error

• Message class: WAHD - Messages for Alternative Historical Data

• Message number: 621

• Message text: Field catalog for SAP List Viewer not found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WAHD621 - Field catalog for SAP List Viewer not found ?

  The SAP error message WAHD621, which states "Field catalog for SAP List Viewer not found," typically occurs when there is an issue with the field catalog configuration in the SAP List Viewer (ALV). This error can arise in various scenarios, such as when trying to display a report or when using ALV grid or list functionalities.
  Causes:
  
  Missing Field Catalog: The field catalog that defines the structure and properties of the fields to be displayed in the ALV is not defined or is missing.
  Incorrect Program Logic: The program or report may not be correctly initializing or passing the field catalog to the ALV function module.
  Authorization Issues: There may be authorization issues preventing access to the field catalog.
  Data Dictionary Changes: Changes in the underlying data dictionary (like changes in table structure) may lead to inconsistencies in the field catalog.
  
  Solutions:
  
  
  Check Field Catalog Definition:
  
  
  Ensure that the field catalog is properly defined in your program. The field catalog is usually defined as an internal table of type LVC_T_FCAT.
  
  
  Example of defining a field catalog:
  DATA: lt_fieldcat TYPE LVC_T_FCAT,
        ls_fieldcat TYPE LVC_S_FCAT.
  
  CLEAR ls_fieldcat.
  ls_fieldcat-fieldname = 'FIELD_NAME'.
  ls_fieldcat-seltext_m = 'Field Description'.
  APPEND ls_fieldcat TO lt_fieldcat.
  
  
  
  
  Review Program Logic:
  
  Check the program logic to ensure that the field catalog is being populated and passed correctly to the ALV function module (e.g., REUSE_ALV_GRID_DISPLAY or REUSE_ALV_LIST_DISPLAY).
  Ensure that the field catalog is not empty when calling the ALV display function.
  
  
  
  Check Authorizations:
  
  Verify that the user has the necessary authorizations to access the field catalog and the underlying data.
  
  
  
  Debugging:
  
  Use the debugger to step through the code and check if the field catalog is being populated correctly before the ALV display call.
  Look for any runtime errors or exceptions that may indicate why the field catalog is not found.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to ALV and field catalogs for any specific guidance or known issues.
  
  
  
  Recreate Field Catalog:
  
  If the field catalog is corrupted or not functioning as expected, consider recreating it from scratch.
  
  
  
  Related Information:
  
  ALV (ABAP List Viewer): A powerful tool in SAP for displaying lists and reports in a user-friendly format.
  Field Catalog: A structure that defines the fields to be displayed in an ALV report, including properties like field names, descriptions, and formatting options.
  SAP Notes: Check SAP Notes for any specific fixes or updates related to the WAHD621 error.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.