How To Fix CLHP023 - Name of column & is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: CLHP - Graphical Class Maintenance

• Message number: 023

• Message text: Name of column & is not allowed

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 CLHP023 - Name of column & is not allowed ?

  The SAP error message CLHP023 indicates that there is an issue with the name of a column in a data structure or table. This error typically arises when the name of the column does not conform to the naming conventions or restrictions set by SAP.
  Cause:
  
  Invalid Characters: The column name may contain invalid characters or spaces that are not allowed in SAP.
  Reserved Keywords: The column name might be using a reserved keyword in SAP, which cannot be used as a column name.
  Length Restrictions: The column name may exceed the maximum length allowed for identifiers in SAP.
  Naming Conventions: The column name may not follow the required naming conventions (e.g., starting with a letter, using underscores instead of spaces).
  
  Solution:
  
  Check Naming Conventions: Ensure that the column name adheres to SAP's naming conventions. It should start with a letter, contain only alphanumeric characters and underscores, and not exceed the maximum length (typically 30 characters).
  Avoid Reserved Keywords: Verify that the column name is not a reserved keyword in SAP. If it is, choose a different name.
  Modify the Column Name: If the column name is invalid, modify it to comply with the rules. You can do this in the Data Dictionary (SE11) or in the relevant ABAP code.
  Review Data Model: If the column is part of a data model, review the entire model to ensure all names are valid and consistent.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) to check and modify table structures.
  Documentation: Refer to SAP documentation for naming conventions and restrictions for database objects.
  ABAP Development: If you are working with ABAP code, ensure that the code is properly structured and that all identifiers are valid.
  
  If you continue to face issues after checking these points, consider reaching out to your SAP Basis or ABAP development team for further assistance.