How To Fix CN451 - Long text could not be processed

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 451

• Message text: Long text could not be processed

What causes this issue?

The long text could not be created, deleted, or changed, because an
internal error has occurred.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

INCLUDE NA_ALLG_SYSTEMVERW OBJECT DOKU ID TX

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN451 - Long text could not be processed ?

  The SAP error message CN451 ("Long text could not be processed") typically occurs when there is an issue with the long text associated with a document or transaction in the SAP system. This error can arise in various contexts, such as when creating or modifying a project, order, or other objects that utilize long text fields.
  Causes:
  
  Data Corruption: The long text data may be corrupted or improperly formatted.
  Character Limit Exceeded: The long text may exceed the allowed character limit for the field.
  Missing Authorizations: The user may not have the necessary authorizations to access or modify the long text.
  System Configuration Issues: There may be configuration issues in the SAP system that prevent the long text from being processed correctly.
  Transport Issues: If the long text was transported from another system, there may have been issues during the transport process.
  
  Solutions:
  
  Check Long Text Data: Review the long text data for any inconsistencies or corruption. Ensure that it adheres to the expected format and character limits.
  Authorization Check: Verify that the user has the necessary authorizations to access and modify the long text. This can be done by checking the user's roles and permissions.
  System Logs: Check the system logs (transaction SLG1) for any additional error messages or details that may provide more context about the issue.
  Recreate Long Text: If the long text is corrupted, try deleting and recreating it to see if that resolves the issue.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or updates available that resolve known issues.
  Consult with Basis Team: If the issue persists, consult with your SAP Basis team to check for any system configuration issues or to perform a deeper analysis of the problem.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using various transaction codes (e.g., CN01, CN02 for project management).
  SAP Support: If the issue cannot be resolved internally, consider reaching out to SAP Support for assistance.
  Documentation: Review SAP documentation related to long text handling and any specific modules you are working with (e.g., Project System, Controlling).
  
  By following these steps, you should be able to identify the cause of the CN451 error and implement a suitable solution.