How To Fix CX255 - You can only change the table line with a change number

SAP Error Message - Details

• Message type: E = Error

• Message class: CX - Nachrichten für Konfigurationsprozess

• Message number: 255

• Message text: You can only change the table line with a change number

What causes this issue?

You want to change a table line without a change number.

System Response

The system checks whether you need a change number to change the table
line. Once a line has been processed using a change number, you must
enter a change number for all further changes to the line.

How to fix this error?

Enter the change number you require.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CX255 - You can only change the table line with a change number ?

  The SAP error message CX255, "You can only change the table line with a change number," typically occurs in the context of working with change management in SAP, particularly when dealing with change numbers in the context of configuration or engineering change management.
  Cause:
  This error arises when you attempt to modify a line in a table (such as a BOM, routing, or other master data) that is associated with a change number, but the system is configured to only allow changes to be made when a valid change number is specified. This is a safeguard to ensure that changes are tracked and managed properly, especially in environments where strict change control is necessary.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Change Number: Ensure that you have a valid change number assigned to the change you are trying to make. If you do not have a change number, you will need to create one.
  
  
  Assign Change Number: If you have a change number, make sure it is correctly assigned to the line you are trying to modify. You can do this by:
  
  Navigating to the relevant transaction (e.g., CS01 for BOM, CA01 for routing).
  Entering the change number in the appropriate field.
  
  
  
  Use the Correct Transaction: Make sure you are using the correct transaction code that allows for changes with a change number. For example, if you are trying to change a BOM, use CS02 (Change BOM) and ensure the change number is entered.
  
  
  Check Authorizations: Ensure that you have the necessary authorizations to make changes with a change number. If you lack the required permissions, contact your SAP administrator.
  
  
  Review Configuration Settings: If you are consistently encountering this error and believe it should not be happening, review the configuration settings related to change management in your SAP system. This may involve checking the settings in the customizing transaction (SPRO) for change management.
  
  
  Consult Documentation: If you are unsure about the process or need further clarification, refer to SAP documentation or help resources related to change management and change numbers.
  
  
  Related Information:
  
  Change Management: Understanding how change management works in SAP is crucial. Familiarize yourself with concepts like change numbers, change documents, and the overall process of managing changes in master data.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to error CX255. SAP Notes can provide specific fixes or workarounds.
  Training and Support: If you are new to SAP or the specific module you are working with, consider seeking training or support from experienced colleagues or SAP consultants.
  
  By following these steps, you should be able to resolve the CX255 error and successfully make the necessary changes in your SAP system.