How To Fix CACSCHECK203 - Field &1 is not a key field of table &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CACSCHECK - Messages from the Checks Area

• Message number: 203

• Message text: Field &1 is not a key field of table &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CACSCHECK203 - Field &1 is not a key field of table &2 ?

  The SAP error message CACSCHECK203 indicates that a specific field (denoted as &1) is not a key field of the specified table (denoted as &2). This error typically arises in the context of data processing or configuration where a field is expected to be a key field for a particular operation, but it is not defined as such in the database table.
  Cause:
  
  Field Misconfiguration: The field you are trying to use in a context that requires it to be a key field is not defined as a key field in the table's structure.
  Incorrect Table Usage: The operation or function you are trying to perform may be expecting a different table where the field is a key field.
  Data Model Changes: Changes in the data model or table structure may have led to the field being removed as a key field.
  Custom Development: If there is custom code or enhancements, it may be incorrectly referencing fields that are not key fields.
  
  Solution:
  
  Check Table Definition: Verify the definition of the table in the Data Dictionary (transaction SE11). Ensure that the field you are trying to use is indeed a key field.
  Modify Configuration: If the field should be a key field, you may need to modify the table structure (if you have the necessary authorizations) to include it as a key field. This should be done with caution and typically requires a transport request.
  Review Custom Code: If the error arises from custom code, review the logic to ensure that it is referencing the correct fields and tables.
  Consult Documentation: Check any relevant documentation or notes related to the specific transaction or process you are working with to ensure you are using the correct fields.
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with a technical expert who can provide guidance based on your specific system configuration.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE37 (Function Module) to investigate the table and field definitions.
  SAP Notes: Search for SAP Notes related to the specific error message or the transaction you are working with, as there may be known issues or patches available.
  Testing: After making changes, ensure to test the functionality thoroughly to confirm that the error is resolved and that no new issues have been introduced.
  
  By following these steps, you should be able to identify the root cause of the error and implement an appropriate solution.