How To Fix CJ453 - A WBS element with key "&" already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 453

• Message text: A WBS element with key "&" already exists

What causes this issue?

You cannot include the WBS element &V1&, because there already is a
WBS element with this identifier.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Enter a different identifier for the WBS element.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CJ453 - A WBS element with key "&" already exists ?

  The SAP error message CJ453 indicates that there is an attempt to create a Work Breakdown Structure (WBS) element with a key that already exists in the system. This typically occurs when you are trying to create a new WBS element using a key (or identifier) that is already in use for another WBS element.
  Cause:
  
  Duplicate Key: The most common cause is that the WBS element key you are trying to use is already assigned to another WBS element in the system.
  Incorrect Data Entry: There may have been a typographical error or misunderstanding regarding the WBS element key.
  System Configuration: In some cases, the system configuration may allow for certain keys to be reused under specific conditions, but if those conditions are not met, it can lead to this error.
  
  Solution:
  
  
  Check Existing WBS Elements: 
  
  Use transaction code CJ20N or CJ03 to display existing WBS elements and verify if the key you are trying to use is already in use.
  If it exists, you will need to choose a different key for your new WBS element.
  
  
  
  Use a Unique Key: 
  
  When creating a new WBS element, ensure that the key you are using is unique and not already assigned to another element.
  
  
  
  Review Project Structure: 
  
  If you are working within a project structure, ensure that you are not inadvertently trying to create a WBS element in a way that conflicts with existing elements.
  
  
  
  Consult Documentation: 
  
  Review any project documentation or naming conventions that may dictate how WBS keys should be structured.
  
  
  
  Check for Deletion: 
  
  If you believe the WBS element should not exist, check if it was deleted or archived. Sometimes, elements may still be referenced in the system even if they are not actively used.
  
  
  
  System Configuration: 
  
  If you are an administrator, check the configuration settings for WBS elements to ensure that there are no restrictions or settings that could be causing this issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CJ20N: Project Builder
  CJ03: Display WBS Element
  CJ02: Change WBS Element
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to WBS element creation.
  User Authorization: Ensure that you have the necessary authorizations to create WBS elements in the project structure.
  
  By following these steps, you should be able to resolve the CJ453 error and successfully create your WBS element.