How To Fix CN248 - Object type: &1, external ID; &2, new ID: &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 248

• Message text: Object type: &1, external ID; &2, new ID: &3

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN248 - Object type: &1, external ID; &2, new ID: &3 ?

  The SAP error message CN248 typically occurs in the context of project management or construction management within the SAP system, particularly when dealing with object types such as WBS elements, networks, or activities. The error message indicates that there is an issue with the external ID of an object when trying to create or modify it.
  Cause:
  The error message CN248 can be triggered by several factors, including:
  
  Invalid External ID: The external ID provided does not exist or is not valid for the specified object type.
  Duplicate IDs: There may be an attempt to create an object with an ID that already exists in the system.
  Authorization Issues: The user may not have the necessary permissions to create or modify the object with the specified external ID.
  Configuration Issues: There may be configuration settings in the project system that are not aligned with the operation being performed.
  
  Solution:
  To resolve the CN248 error, you can take the following steps:
  
  
  Check External ID: Verify that the external ID you are using is correct and exists in the system. You can do this by searching for the object in the relevant transaction (e.g., CJ20N for project management).
  
  
  Avoid Duplicates: Ensure that the new ID you are trying to create does not already exist. If it does, consider using a different ID or modifying the existing object instead.
  
  
  Review Authorizations: Check if you have the necessary authorizations to create or modify the object. You may need to contact your SAP security team to ensure you have the appropriate roles assigned.
  
  
  Consult Configuration: If the issue persists, consult with your SAP configuration team to ensure that the project system settings are correctly configured for the operations you are trying to perform.
  
  
  Use Transaction Codes: Utilize relevant transaction codes to check the status of the object and its attributes. For example, use CJ03 to display WBS elements or CN21 for networks.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message. SAP Notes can provide patches or additional guidance on resolving known issues.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to project management, such as CJ20N (Project Builder), CJ03 (Display WBS), and CN21 (Create Network).
  Documentation: Review SAP documentation or help files related to project management and object types to understand the requirements for external IDs and object creation.
  Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP helpdesk for further assistance.
  
  By following these steps, you should be able to identify the cause of the CN248 error and implement a suitable solution.