How To Fix 0K559 - Data type of field & different in field catalog and data table

SAP Error Message - Details

• Message type: E = Error

• Message class: 0K - Messages for "General List Modules"

• Message number: 559

• Message text: Data type of field & different in field catalog and data table

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 0K559 - Data type of field & different in field catalog and data table ?

  The SAP error message 0K559 indicates that there is a mismatch between the data type of a field in the field catalog and the corresponding field in the data table. This error typically occurs when you are trying to display or process data in a report or a transaction that involves a field catalog, such as ALV (ABAP List Viewer) reports.
  Cause:
  
  Data Type Mismatch: The field in the field catalog has a different data type than the field in the data table. For example, if the field in the field catalog is defined as a character type (CHAR) but the corresponding field in the data table is defined as a numeric type (NUMC), this error will occur.
  Field Length Differences: Even if the data types are the same, differences in field lengths can also lead to this error.
  Incorrect Field Catalog Definition: The field catalog may not be defined correctly, leading to inconsistencies between the field definitions.
  
  Solution:
  
  
  Check Field Catalog Definition: Review the field catalog definition in your ABAP code. Ensure that the data types and lengths of the fields in the field catalog match those in the data table.
  
  Use the DESCRIBE FIELD statement to check the data type and length of the fields.
  
  
  
  Adjust Data Types: If you find a mismatch, adjust the data types in the field catalog or the data table as necessary. Ensure that they are compatible.
  
  
  Field Length Consistency: Ensure that the lengths of the fields in both the field catalog and the data table are consistent. If one is longer than the other, it may lead to truncation or conversion issues.
  
  
  Debugging: If you are unsure where the mismatch is occurring, you can use debugging tools in SAP to step through the code and inspect the values and types of the fields being processed.
  
  
  Consult Documentation: If you are using standard SAP reports or transactions, consult the relevant SAP documentation or notes for any known issues or updates related to the specific error.
  
  
  Related Information:
  
  ALV Reports: This error is commonly encountered in ALV reports, where a field catalog is used to define the layout and properties of the report output.
  Data Dictionary: Familiarize yourself with the data dictionary (SE11) to check the definitions of the fields involved.
  ABAP Development: If you are an ABAP developer, ensure that you follow best practices for defining field catalogs and handling data types.
  
  By addressing the data type and length mismatches, you should be able to resolve the error message 0K559 and ensure that your reports or transactions function correctly.