How To Fix CN440 - Serious error occurred during number assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 440

• Message text: Serious error occurred during number assignment

What causes this issue?

A serious error has occurred during number range assignment for
milestones(PS)/trigger points(PP).
Possible reason:
You defined an external number range for the number range object MLST
No external number range assignments are allowed for milestones/trigger
points.
General system error.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN440 - Serious error occurred during number assignment ?

  The SAP error message CN440 ("Serious error occurred during number assignment") typically occurs in the context of number assignment for various objects in SAP, such as internal orders, projects, or other entities that require unique identifiers. This error can arise due to several reasons, and addressing it usually involves checking configurations and system settings.
  Causes:
  
  Number Range Issues: The number range for the object you are trying to create may be exhausted or incorrectly configured.
  Authorization Issues: The user may not have the necessary authorizations to access or modify the number range.
  System Configuration: There may be inconsistencies or misconfigurations in the number range settings in the SAP system.
  Database Issues: There could be underlying database issues that prevent the system from assigning a new number.
  Custom Code: If there are custom developments or enhancements, they might interfere with the standard number assignment process.
  
  Solutions:
  
  
  Check Number Ranges:
  
  Go to the transaction code SNRO (Number Range Objects) and check the relevant number range object for the entity you are trying to create.
  Ensure that the number range is defined correctly and that there are available numbers in the range.
  
  
  
  Adjust Number Range:
  
  If the number range is exhausted, you may need to extend it. This can be done in the same SNRO transaction by adjusting the upper limit of the number range.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to create or modify the object. Check the roles and profiles assigned to the user.
  
  
  
  Check Configuration:
  
  Review the configuration settings for the relevant module (e.g., Project System, Controlling) to ensure that everything is set up correctly.
  
  
  
  Check for Custom Code:
  
  If there are any custom developments, review the code to ensure it does not interfere with the standard number assignment process.
  
  
  
  System Logs:
  
  Check the system logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  
  
  Database Consistency:
  
  If you suspect database issues, you may need to run consistency checks or consult with your database administrator.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: SNRO (Number Range Objects), SLG1 (Application Log), SE11 (Data Dictionary), SE37 (Function Module).
  Documentation: Refer to SAP Help documentation for specific modules related to the error.
  Community Forums: SAP Community and other forums can be useful for finding similar issues and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the CN440 error in your SAP system.