How To Fix SRMKC018 - Error in structure of ALV grid table

SAP Error Message - Details

• Message type: E = Error

• Message class: SRMKC - Message Class Keyword Catalog

• Message number: 018

• Message text: Error in structure of ALV grid table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRMKC018 - Error in structure of ALV grid table ?

  The SAP error message SRMKC018, which indicates "Error in structure of ALV grid table," typically occurs when there is an issue with the data structure being used in an ALV (ABAP List Viewer) grid display. This error can arise due to various reasons, including inconsistencies in the data structure, missing fields, or incorrect field types.
  Causes:
  
  Inconsistent Data Structure: The internal table or structure being passed to the ALV grid may not match the expected format.
  Missing Fields: Required fields in the structure may be missing or not defined correctly.
  Field Type Mismatch: The data types of the fields in the structure may not match the expected types in the ALV grid.
  Incorrect Field Catalog: The field catalog used to define the layout of the ALV grid may have errors or inconsistencies.
  Data Retrieval Issues: Problems in the data retrieval logic (e.g., SELECT statements) can lead to an empty or improperly structured internal table.
  
  Solutions:
  
  Check Data Structure: Ensure that the internal table or structure being passed to the ALV grid is correctly defined and matches the expected format. Verify that all required fields are present.
  Validate Field Types: Confirm that the data types of the fields in the structure match the expected types in the ALV grid. For example, if a field is expected to be a character type, ensure it is not defined as a numeric type.
  Review Field Catalog: Check the field catalog used for the ALV grid. Ensure that it is correctly defined and that all fields in the catalog correspond to the fields in the internal table.
  Debug Data Retrieval: If the data is being retrieved from a database, debug the SELECT statements to ensure that they are returning the expected results and that the internal table is populated correctly.
  Use Standard ALV Functions: If you are using custom code to create the ALV grid, consider using standard ALV function modules (like REUSE_ALV_GRID_DISPLAY) to minimize errors.
  
  Related Information:
  
  ALV Grid Display: The ALV grid is a powerful tool in SAP for displaying tabular data. It allows for sorting, filtering, and other interactive features.
  Field Catalog: The field catalog is a structure that defines the properties of the fields displayed in the ALV grid, such as field names, data types, and display attributes.
  Debugging Techniques: Use the ABAP debugger to step through the code and inspect the internal table and field catalog before the ALV grid is displayed.
  
  If the issue persists after checking these areas, consider consulting SAP documentation or reaching out to SAP support for further assistance.