How To Fix CN348 - Function is only possible for external activities/activity elements

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 348

• Message text: Function is only possible for external activities/activity elements

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN348 - Function is only possible for external activities/activity elements ?

  The SAP error message CN348 ("Function is only possible for external activities/activity elements") typically occurs in the context of project management within SAP, particularly when dealing with network activities in Project System (PS) or when trying to perform certain operations on activities that are not defined as external.
  Cause:
  This error usually arises when you attempt to perform an operation (like assigning costs, changing status, or executing a function) on an internal activity or a standard activity element that is not classified as an external activity. External activities are those that involve external resources or costs, while internal activities are usually related to internal resources or costs.
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check Activity Type: Ensure that the activity you are trying to work with is indeed an external activity. You can do this by checking the activity type in the project definition.
  
  
  Change Activity Type: If the activity is not external and should be, you may need to change its type to an external activity. This can typically be done in the project definition or activity details.
  
  
  Review Project Structure: Ensure that the project structure is set up correctly. Sometimes, the hierarchy or the way activities are linked can cause issues.
  
  
  Use Correct Functions: Make sure you are using the correct functions for the type of activity you are working with. Some functions are only applicable to external activities.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the functions you are trying to use and their applicability to different activity types.
  
  
  Check Authorizations: Ensure that you have the necessary authorizations to perform the action on the activity.
  
  
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP Project System, such as CJ20N (Project Builder) or CN41 (Activity Overview).
  SAP Notes: Check for any SAP Notes related to this error message for potential patches or updates that may address the issue.
  Training and Documentation: Consider training sessions or documentation on SAP Project System to better understand how to manage activities and their classifications.
  
  By following these steps, you should be able to identify the cause of the CN348 error and implement a suitable solution.